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In-house Review

1900Scope of Design

1900 (SRV-1/Q2.02)1900.1

Table of Contents

Scope of DesignTable of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.1Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.2Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.3Pressure Relief Valve Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.5Product Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.7Steam Trim (TD) Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.9Liquid Trim (LA) Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.10Restricted Lift Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.11Soft Seat Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.12

MaterialsConventional Design 1900 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.15Bellows Design 1900-30 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.17Balanced Bellows Design 1900-35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.19Soft Seat (DA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.21Steam Trim (TD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.22Liquid Trim (LA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.23Special Material and Service Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.24

Sour Gas (SG) Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.25Hydrofluoric Acid (HA) Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.26

Corrosive ServiceStainless Steel (S2, S3 and S4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.27Alloy 20 (A1, A2, A3 and A4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.28Monel (M1, M1 (MB), M2, M3 and M4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.29Hastelloy C (H1, H2, H3 and H4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.30

Low Temperature - Process Fluid (L1, L2 and L3)(For media temperatures to -450°F or -268°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.31

Low Temperature - Ambient (C1)(For ambient temperatures to -50°F or -45.6°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.32

High Temperature - (T1 and T2)(For media temperatures to 1500°F or 816°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.33

Lethal Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.34O-Ring Selection (Durometer by valve type and set pressure) . . . . . . . . . . . . . . . . . . . . . . . .1900.35O-Ring Selection (Temperature limits) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.36

AccessoriesCaps, Levers, and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.37

Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.41Bolt-on Jackets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.43

Dimension & Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.45

Pressure/Temperature Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.56

Capacity Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1900.86

1900Scope of Design

Consolidated Spring Loaded Safety Relief Valves 1900 (SRV-1/Q2.02)1900.2

The comprehensive line of spring loaded CONSOLIDATED safety reliefvalves represents over one hundred years of valve manufacturingexperience in meeting and solving industry problems involving a widescope of valve applications.

The flanged CONSOLIDATED safety relief valve line consists of valves in avariety of sizes and materials. Each product offering is unique andjudgements are required in selecting the proper option.

To accomplish the selection process start with the General Informationsection of this catalog and follow the prescribed steps necessary tofinalize the selection.

This Section, 1900 SRV, should be reviewed against the user’sspecifications and product offerings selected. Beyond this step, proceedwith sizing and then confirmation of the pressure and temperature limits(API or ASME).

1900 Flanged Series safety relief valves are supplied in many variationsto suit specific applications.

Product variations covered in subsequent pages are noted below:

Product Variation Description1900 Conventional1900-30 Bellows Construction1900-35 Balanced Bellows

with Auxiliary Balancing Piston1900HA Special Materials for

Hydrofluoric Acid Service1900SG Sour Gas Trim1900DA Soft Seat1900LA Liquid Trim with Metallic Seats1900DA - LA Liquid Trim with Soft Seats1900TD Special Trim for Steam &

Organic Heat Transfer Media

The Consolidated 1900 series is compliant with the following codesand standards:

ASME B & PVC, Section II - Material (Applicable as required by ASMEB & PVC, Section III or VIII)

ASME B & PVC, Section III, class 2 and 3 (Gas, Vapor, and Liquid Service)

ASME B & PVC, Section VIII (Gas, Vapor, and Liquid Service)

ASME B16.34 and ASME B16.5

API 520, 526 and 527

ISO 4126

NACE MR0175 Standard Material Requirements

API Standard 526-1995Safety relief valves specified within this catalog comply with API standard526 - Fourth Edition, 1995. The 1900 Series valves previously compliedwith API standard 526 - Third Edition, 1984. In some cases dimensionaland nominal flanges sizes differ between these two editions. When orderingreplacement valves that must comply with API Standard 526 - Third Edition,1984, contact the factory for verification of the correct replacement.

Introduction

1900Scope of Design

1900 (SRV-1/Q2.02)1900.3

VENT PLUG

Type 1900 Series

Conventional

VENT,DO NOT PLUG

Type 1900-30 Series

Balanced Bellows

Type 1900-35 Series

Balanced Bellowswith Auxiliary Balancing Piston

VENT,DO NOT PLUG

1900 Series Overview

1900 Series Conventional Safety Relief ValvesSteel, Flat Seat, Top Guided, High Capacity, Stainless Steel TrimThis standard rugged configuration is equipped with corrosion resistant trim and a carbon steel body, bonnetand cap. The components are top guided, providing for free and repeatable action.The flat disc seat provides for easy maintenance and remachining.The exclusive “Eductor Tube” minimizes bonnet cavity pressure so that product performance is predictable.The nozzle is bottom inserted and rigidly held in position, providing a corrosion resistant path of flow to thevalve and corrosion resistant seating surfaces.

1900-30 Series Bellows ConstructionThis valve is the same as the conventional design except that a bellows has been added. When the bellowsis installed, the eductor tube is removed.Caution: It is important that the bonnet be vented to the atmosphere.

A bellows is added to the conventional valve to deal with any of several situations:(1) Back pressure entering the valve through the valve outlet is excessive or variable. If back pressurefluctuates with ±10% of a nominal value, a bellows is required.If a built up back pressure exceeds 10% of the set pressure or cold differential set pressure, a bellows must be used.(2) If the entering fluid is a slurry, highly viscous, or of a nature that it can enter the critical clearancesbetween the guides/disc holder, protect that area with a bellows.(3) If the fluid being handled is corrosive to the upper works of the valve, isolate the bonnet chamber throughuse of a bellows.Conventional valves can be easily converted to a bellows design or vice versa through the use of retrofit kits.All CONSOLIDATED 1900-30 Series valves are balanced bellows designs, meaning that they fully compensatefor the effects of back pressure.

1900-35 Series Balanced Bellows (with Auxiliary Balancing Piston)

The Balanced Bellows seals the body and fluid stream from the bonnet and working parts. Auxiliary balancingpiston assures proper valve performance by compensating for back pressure in case of bellows failure.The use of an auxiliary balanced piston is indicated when:(1) back pressure (either constant or variable) exists and;(2) excessive pressure may build in the bonnet as a result of pressure build -up in the bonnet vent piping and; (3) resultant build -up of pressure in the bonnet would cause a dangerous condition.Caution: It is important that the bonnet be vented to the atmosphere.

NOTE: Unless otherwise stated the valve is always supplied with a screwed cap. The exception to this would be whereASME B & PVC, Section VIII requires levers for steam, air, and hot water service over 140°F.

Refer to Accessories for available types of caps, levers, and accessories.

1900Scope of Design


1900 Series Overview

0.91270.785

H

1-1/2 x 3

1-1/2 x 3

2 x 3

2 x 3

2 x 3

2 x 3

—

2 x 3

2 x 3

—

2 x 3

2 x 3

—

1.4961.287

J

2 x 3

2 x 3

3 x 4

3 x 4

3 x 4

3 x 4

—

3 x 4

3 x 4

—

3 x 4

3 x 4

—

2.1381.838

K

3 x 4

3 x 4

3 x 4

3 x 4

3 x 6

3 x 6

—

3 x 4

3 x 4

—

3 x 6

3 x 6

—

3.3172.853

L

3 x 4

3 x 4

4 x 6

4 x 6

4 x 6

4 x 6*

—

4 x 6

4 x 6

—

4 x 6

4 x 6*

—

4.1863.6M

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

—

—

4 x 6

4 x 6

—

4 x 6

—

—

5.0474.34

N

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

—

—

4 x 6

4 x 6

—

4 x 6

—

—

7.4176.38

P

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

—

—

4 x 6

-

4 x 6

4 x 6

—

—

12.8511.05

Q

6 x 8

6 x 8

6 x 8

6 x 8

—

—

—

6 x 8

6 x 8

—

—

—

—

18.616R

6 x 8

6 x 8

6 x 10

6 x 10

—

—

—

6 x 8

6 x 10

—

—

—

—

30.2126T

8 x 10

8 x 10

8 x 10

—

—

—

—

8 x 10

—

—

—

—

—

50.26N/A

V

10 x 14

10 x 14

10 x 14

—

—

—

—

10 x 14

—

—

—

—

—

78.996N/AW

12 x 16

12 x 16

12 x 16

—

—

—

—

12 x 16

—

—

—

—

—

ASMEAPI

ORIFICE

1905

1906

1910

1912

1914

1916

1918

1920

1922

1923

1924

1926

1928

1900 & 1900-30 Inlet x Outlet Size Combinations (in.) Orifice Area (sq. in.) InletFlangeRatingASMEB16.5

150

300

300

600

900

1500

2500

300

600

600

900

1500

2500

OutletFlangeRatingASMEB16.5

150

300

150

300

0.12790.110

D

1 x 2

1 x 2

1 x 2

1 x 2

1-1/2 x 2

1-1/2 x 2

1-1/2 x 3

1 x 2

1 x 2

—

1-1/2 x 2

1-1/2 x 2

1-1/2 x 3

0.22790.196

E

1 x 2

1 x 2

1 x 2

1 x 2

1-1/2 x 2

1-1/2 x 2

1-1/2 x 3

1 x 2

1 x 2

—

1-1/2 x 2

1-1/2 x 2

1-1/2 x 3

0.35680.307

F

1-1/2 x 2

1-1/2 x 2

1-1/2 x 2

1-1/2 x 2

1-1/2 x 3

1-1/2 x 3

1-1/2 x 3

1-1/2 x 2

1-1/2 x 2

—

1-1/2 x 3

1-1/2 x 3

1-1/2 x 3

0.58490.503

G

1-1/2 x 3

1-1/2 x 3

1-1/2 x 3

1-1/2 x 3

1-1/2 x 3

2 x 3

2 x 3

1-1/2 x 3

1-1/2 x 3

—

1-1/2 x 3

2 x 3

2 x 3

ASMEAPI

ORIFICE

1905

1906

1910

1912

1914

1916

1918

1920

1922

1923

1924

1926

1928

1900 & 1900-30 Inlet x Outlet Size Combinations (in.) Orifice Area (sq. in.) InletFlangeRatingASMEB16.5

150

300

300

600

900

1500

2500

300

600

—

900

1500

2500

OutletFlangeRatingASMEB16.5

150

300

150

300

NOTE: Inlet and outlet size combinations as well as Orifice sizes shown in the table above are compliant with API standard 526 - Fourth Edition, 1995.* 1916L and 1926L are supplied with a 150# outlet.

1900Scope of Design

1900 (SRV-1/Q2.02)1900.5

All pressure relief valves operate on the principle of inlet system pressureovercoming a spring load, allowing the valve to relieve a defined capacity.

When the valve is closed during normal operation (See Figure1900.1), the vessel pressure acting against the seating surfaces(area “A”) is resisted by the spring force. As vessel pressure increases,the pressure at “A” tends to equalize the spring force and the pressureholding the seats together approaches zero.

orifice, pressure builds up in chamber “B” (See Figure 1900.2). Sincepressure can now act over a larger area, an additional force is availableto overcome the spring force. By adjusting the “adjusting ring” theopening in the secondary annular orifice can be altered, thus controllingpressure build-up in chamber “B”. This controlled pressure build -up inchamber “B” will overcome the spring force causing the disc to moveaway from the nozzle seat and the valve to “pop” open.

In vapor or gas service the valve may “simmer” before it will “pop”.When the vessel pressure increases to within one to two percent of theset pressure, media will audibly move past the seating surfaces intochamber “B”. As a result of restriction of flow in the secondary annular

Once the valve has opened an additional pressure build-up at “C”occurs. (See Figure 1900.3.) This is due to the sudden flow increaseand the restriction to flow through another annular orifice formedbetween the inner edge of the disc holder and the outside diameter ofthe adjusting ring. These additional forces at “C” cause the disc to liftsubstantially at “pop”.Flow is restricted by the opening between the nozzle seat and disc seatuntil the disc seat has been lifted from the nozzle seat approximatelyone -quarter of the nozzle throat diameter. After the disc has attainedthis degree of lift, flow is then restricted by the primary orifice ratherthan by the area between the seating surfaces.Blowdown (the difference between opening and closing pressure) canbe controlled within limits by positioning the single adjusting ring.Blowdown is caused by the result of the spring force not being able toovercome the summation of the forces at “A”, “B”, and “C” until thepressure at “A” drops below the set pressure.

How Pressure Relief Valves Operate

Spring

Disc

Chamber B

Disc Holder

Adjusting Ring

A

Figure 1900.1 - Closed

Figure 1900.2 - Partially Open

SecondaryAnnular Orifice

HUDDLINGCHAMBER

C

Primary Orifice

Figure 1900.3 - Fully Open

SecondaryAnnular Orifice

HUDDLINGCHAMBER

1900Scope of Design


Figure 1900.4 reflects the flow path of fluid through the valve. It is significant to recognize that the systempressure enters through the nozzle and remains at a high pressure until it expands through the secondary annularorifice. Pressure downstream of the secondary annular orifice is much lower than the system pressure. The upper

portion of the valve base plus the outlet flange are of a lower pressure rating than the inlet side of the valve.

How Pressure Relief Valves Operate

NOTE: BLOWDOWN SETTINGS - Production testing required by Manufacturers of safety relief valves isgoverned by ASME Section VIII, UG -136 (d), which does not require the setting of blowdownduring production test. Adjusting rings on the 1900 flanged safety relief valve series are factoryadjusted to predetermined ring settings. This will provide a consistent opening and closingpressure on the safety relief valve.

Guide

Disc Holder

Disc

Adjusting Ring

Adjusting Ring Pin

Primary Orifice

Nozzle

Base

Spindle

Eductor Tube

Inlet Neck

Secondary Annular Orifice

Threads

Figure 1900.4

1900Scope of Design

1900 (SRV-1/Q2.02)1900.7

Adjusting RingThe adjusting ring in the CONSOLIDATED safety relief valve is preset topredetermined positions prior to putting the valve in service. Presettingreduces the necessity of popping the valve in service to ascertain thatthe ring has been set properly for attaining the necessary lift andrelieving capacity.

Simple Blowdown AdjustmentAdjustment of CONSOLIDATED safety relief valve blowdown, or reseatingpressure, is by means of a single adjusting ring. When moved upward,blowdown is increased (lowering the reseating pressure), or when moveddownward, the blowdown is decreased (raising the reseating pressure).The simplicity and advantages of this adjustment are obvious whencomparing valves having two or more adjusting rings each of which affectvalve action as well as blowdown.

Minimum Guiding AreaGuiding areas greater than those required to align the seating surfaces areundesirable in a safety relief valve, especially those used in the processindustries. The smaller the guiding area of the valve (when corrosion orcontamination from the flowing medium build up in the valve guidingsurfaces) the less tendency the guiding area will have to stick and hindervalve operation.

NozzleThe nozzle is a pressure containing component in constant contact withthe process media in both the open and closed valve positions. To ensuremaximum reliability and safety, CONSOLIDATED flanged SRV nozzles aremade from forgings, investment castings, or centrifugal castings.

Spindle Pocket ConnectionThe connection between the spindle and disc holder in a CONSOLIDATED safetyrelief valve is a positive method of attachment. The Inconel snap ring andgroove design make it virtually impossible to remove the spindle from thedisc holde, unless the ring is compressed intentionally. This design requiresa minimum amount of effort to disassemble during maintenance.

Design SimplicityCONSOLIDATED safety relief valves embody a minimum number ofcomponent parts which results in a savings by minimizing spare partsinventory and simplifying valve maintenance.

Maximum Seat TightnessSeat finish in a safety relief valve is of the utmost importance; otherwise,valve leakage will occur.CONSOLIDATED safety relief valve seats are precision machined and lapped.This ensures positive seating and prevents loss of contained media.The Thermodisc™ design provides a tighter closure and compensates fortemperature variations around the periphery of the nozzle. Thermaldistortion, which produces seat leakage, is minimized in steam service.

Cap and Lever InterchangeabilityMany times it is necessary to change the type of cap or lever in the fieldafter a valve has been installed. All CONSOLIDATED safety relief valves aresupplied so they can be converted to any type of lever or cap desired. Itis not necessary to remove the valve from the installation, nor will the setpressure be affected when making such a change.

Valve InterchangeabilityA CONSOLIDATED safety relief valve may be converted from the standard,conventional type valve to the bellows type, or to the O-Ring seat seal type,Thermodisc™ seat Liquid Trim, or vice versa, requiring a minimum number ofnew parts. This results in lower costs.

Quality MaterialAll CONSOLIDATED safety relief valve castings and forgings are made toASTM/ASME specifications and are subject to many rigid inspections,ensuring the highest degree of quality.Coupled with the highest quality workmanship, this ensures continuousprotection and long, trouble-free valve life.

Product Features - 1900 Flanged Series

1900Scope of Design


Reduction of Valve Bonnet PressureClosed bonnet valves are subject to variable pressure past the guiding surfaces when the valve is open, which adds a variable force to that of the spring, affectingvalve performance. To eliminate excess bonnet pressure and ensure good valve opening and closing action, an Eductor Tube is provided.The Eductor Tube reduces bonnet pressure by pulling discharging fluids out of the bonnet faster than it is possible for the discharging fluids to enter past theguiding surfaces, acting as a siphon due to the drawing effect of the flow through the outlet side of the valve.

Eductor Tube Reduces Bonnet PressureAn exclusive with CONSOLIDATED valves! During valve discharge, media flows through the clearance between the disc holder and guide, building up bonnetpressure. This adds a variable force to the spring force, which inhibits valve lift. Bonnet pressure is reduced by the eductor effect of the medium flowing athigh velocity at the valve outlet.The greater lifting force (resulting from a reduction in bonnet pressure) introduces important advantages:

(1) Response to blowdown control adjustment is uniform(2) Positive, full - rated capacity at low overpressures is assured(3) Better operation at higher back pressures with Eductor Tube.(4) Complete stability (of valve lift and capacity) is assured during operation.(5) Increases the lifting force when the valve opens and tends to break slight corrosive deposits or surface film which accumulate on the guiding

surfaces and retard valve action. (For severe corrosion applications, a bellows valve is recommended.)

Product Features - 1900 Flanged Series

Figure 1900.5 - Eductor Tube

Eductor Tube

1900Scope of Design

1900 (SRV-1/Q2.02)1900.9

The 1900 TD is specifically designed for steam service and organic heattransfer media and is certified to ASME Code Section Vlll.Thermodisc™ – this is a specifically designed disc for use on hightemperature fluids. This concept has more than 40 years of field provenperformance that ensures the tightest valves in the world.A Thermodisc™ is required for steam service.

The Martensitic stainless steel disc construction allows for highstrength and toughness. As the set point of the valve is approached,the pressure sealing effect of the Thermodisc™ assists in the tightnessof the seat as does the rapid thermal equalization that occurs due tothe thin sealing section.

1900 Steam Trim (TD) Valves

Retainer Ring

Nozzle

Adjusting Ring

Disc Holder

Thermodisc™

1900 Steam Trim Internals

1900 Disc Design Availability

Disc Design

Standard Solid Disc Thermodisc1

Steam Liquid

LiquidOrganic

HeatTransferMedia

VaporOrganic

HeatTransferMedia

Vapor Steam Liquid

LiquidOrganic

HeatTransferMedia

VaporOrganic

HeatTransferMedia

Vapor

ASMECode

Section

ValveType

19001900-301900-351900/P12

1900/P32

-----

XXX--

XXX--

---

X4

-

XXXXX

XXX--

-----

-----

XXXX3

X3

XXX--

NOTES: 1 Thermodisc™ is provided in one material only, a specially heat treated martenistic stainless steel.2 Refer to the 1900/P Series section for product information.3 1900/P Series are not intended for overpressure protection of power boiler drum, superheater or reheater equipment.4 Consult the factory for special conditions that require the use of an ASME Code Section I pressure relief valve.

Except for liquid thermal relief applications, the “P” Series are not intended for liquid service.

VIIIVIIIVIII

I or VIIII or VIII

1900Scope of Design


The Liquid Trim LA (liquid application) represents the second generationof ASME B & PVC, Section VIII certified liquid trim valves and must beused for all liquid applications for both ASME B & PVC, Section VIIIcertified and non-certified valves. Liquid applications have been definedas follows:

(1) if the fluid remains liquid while flowing through the valve

(2) if flowing fluid flashes going through the valve

(3) for ASME B & PVC, Section VIII certified and non-certified thermal

relief applications. (Thermal Relief is to prevent excessive pressure causedby thermal expansion of trapped liquids). The LA trim provides blowdownperformance with ranges from 7% to 12% below the set pressure. Thisvaluable feature provides conservation of media, a positive lift and asmooth chatter - free operation. Because of the short blowdownperformance of this design, it is critical that the inlet connection alwaysprovide for a pressure drop of 3% or less from the vessel to the valve asrecommended by API 520.

Conversion of existing 1900 Series valves to liquid trim is availablethrough the factory or your local Green Tag Center.

1900 Liquid Trim (LA) Valves

Single piece disc holder for maximum rigidity

and part integrity.

Designed to provide high liftand capacity with stable

operation on liquid media.

Guide

Disc Retainer

Adjusting Ring

Disc Holder

Disc

Nozzle

1900 Liquid Service Internals

1900Scope of Design

1900 (SRV-1/Q2.02)1900.11

D and E Orifice Only

The 1900 series is offered in orifice sizes ranging from the smallest “D” size to the largest “W” size. In order to accomplish certain valve functions somespecial considerations have to be made. Such a case is the D and E orifice designs noted below.The D and E valves are restricted lift versions of the “F” orifice valve. The lift is restricted by a limit washer to provide the equivalent effective orifice areafor a “D” or “E” orifice. This design is available with a balanced bellows configuration and is designed for back pressure applications.The standard 1900 Series are available with restricted lifts in orifices ranging from “F” to “W” for compressible media only.

1900 Restricted Lift Valves

Conventional

RESTRICTED LIFT

Balanced Bellows

Guide

Disc Holder

Limit Washer

Limit Washer

1900Scope of Design


Closeness of Operating Pressure to Set PressureWhere the operating pressure is close to the set pressure, seat tightnesscan be maintained at relatively higher operating pressures.

Compressor Discharge and Positive DisplacementPump ServiceMechanical vibration and pressure waves could lift the valve disc with each strokeand may cause flat metal - to -metal seats to rub together and become damaged.The 45° metal - to -metal load bearing seats in the CONSOLIDATED O-Ringseat seal assure true alignment, aided by full system pressure behind the O-Ring, which effectively seals against leakage.

Corrosive ServicesIn some services, corrosion of the seating surfaces is the cause of vaIveleakage. In this type of service, the CONSOLIDATED O-Ring seat seal willprotect the metal seat on the nozzle against contact of the corrosive fluidthereby maintaining greater tightness.

Foreign Matter and Slurry ServiceMany times foreign material such as pipe scale, welding beads, sand dustparticles, etc. may damage the metal - to -metal seating surfaces in avalve of this type when it is open and flowing.The CONSOLIDATED O-Ring seat seal is designed to absorb the impact ofmost foreign particles without damage.

Hot Water Boiler ServiceWhen a safety relief valve opens hot water flashes into steam at theseating surfaces and solid particles which float to the water surface aredriven against the seating surfaces at steam velocities. CONSOLIDATED O-Ringseat seal valves can withstand this type of service and remain tight to agreater degree than metal - to -metal seat valves.CONSOLIDATED uses proven quality Teflon® O-Ring seats for this service. Insome pressure/temperature applications, Teflon® is not resilient, andleakage may occur.

BenefitsSafety Relief Valve leakage which is aggravated by any cause is usuallycostly. In many cases, expensive product is lost and maintenance costsincreased. CONSOLIDATED O-Ring seat seal valves are designed to eliminateleakage in troublesome applications and reduce overall costs. Shouldleakage occur, it is much simpler and less expensive to replace the O-Ringthan to maintain metal - to -metal seats.

O-Ring Conversion1900 Series CONSOLIDATED metal seated valves can be converted to O-Ringseat seals by installing a few basic parts provided in a conversion kit.

Soft Seat Applications

1900-DA soft seats without bellows

1900Scope of Design

1900 (SRV-1/Q2.02)1900.13

The Double Seal Soft SeatThe double seal design incorporates the merits of both a soft seat and a metalseat design valve. The 45°metal seat provides the load bearing surface totransmit spring force, the slotted O-Ring retainer allows the O-Ring to bepressurized and accomplish the primary sealing function. This O-Ring sealdesign can be used throughout the full pressure range of the valve. Forpressure/temperature ratings of the seal, refer to O-Ring Selection Table in thissection (pages 1900.35 and 1900.36).Tightness: CONSOLIDATED O-Ring seat seal valves are bubble tight at 95% of setpressures over 100 psig.The following table reflects the percent of set pressure (popping pressure) atwhich the valve will be bubble tight on air.

CONSOLIDATED O-Ring seat seals provide positive closure at service pressurescloser to the set pressure than is possible with metal - to -metal seats assuringcontinuous, trouble-free service, and complete valve tightness afternumerous “pops”.

NOTE: The CONSOLIDATED 1900 O -Ring design features a secondary metal-to-metal seatwhich becomes effective if O -Ring integrity is lost due to external fire or other causes.The retainer is lapped to the nozzle at assembly assuring seat tightness.

1900 Soft Seat (DA) Option

Percent ofSet Pressure

90%

92%

94%

95%

Set Pressure(psig)5 to 30

31 to 50

51 to 100

101 to Max rating of valve

1900Scope of Design


1900 Soft Seat (DA) OptionHow the Double Seal Works

45°

1) Concentric Alignment

The nozzle bore and O -Ring retainer are both machined to an angle of45°. This ensures that as the valve disc opens and closes, the O -Ring isaligned concentrically against the lip of the nozzle. Close tolerancebetween the nozzle and the body, or the body and the disc guide and discholder, also help to ensure a tight seal when the valve is closed. Accuratealignment coupled with the load bearing function of the O -Ring retainervirtually eliminates O -Ring abrasion from valve action.

2) Maximum Sealing Force

On the back side of the O -Ring retainer there are two small slots. Whenthe valve is closed, process media enters between the machined seat ofthe nozzle and the O -Ring retainer and proceeds up the slots behind theO -Ring. This pressure forces the O -Ring against the lip of the nozzle andthe curved recess of the disc holder. As the pressure within the valve risesto set point, the O -Ring is pressed tightly against the nozzle to maintainmaximum sealing force until break-away pressure is reached.

3) O-Ring Retention

When the valve opens, the pressure behind the O -Ring escapes from thesame two slots on the O -Ring retainer. This prevents the O -Ring frombeing ejected. Additionally, the O -Ring encapsulating retainer preventsthe O -Ring from being pulled from its setting by the high velocity, lowpressure discharge inside the upper valve body.

Three Essentials to a Tighter and More Secure Seal:

Two unique features distinguish the CONSOLIDATED O-Ring seat seal safetyvalve from other designs. These are the 45° metal - to -metal load bearingseats and the slotted O -Ring retainer.

1900Materials

1900 (SRV-1/Q2.02)1900.15

Conventional Safety Relief Valves1900 Series

Part Material

Standard Material for Conventional Type Safety Relief Valves

1 Base: Types 1905 thru 1918 SA216 Grade WCC Carbon SteelBase: Types 1920 thru 1928 SA217 Grade WC6 Alloy Steel

2 Nozzle 316SS3 Adjusting Ring 316SS4 Adjusting Ring Pin 316SS5 Adjusting Ring Pin Gasket Soft Iron6 Disc 316SS7 Disc Retainer Ring Inconel X7508 Disc Holder 316SS9 Guide 316SS10 Guide Gasket Soft Iron11 Bonnet SA216 Grade WCC Carbon Steel12 Bonnet Gasket Soft Iron13 Base Stud B7 Alloy Steel14 Base Stud Nut 2H Carbon Steel15 Spindle 410SS16 Spindle Retainer Inconel X75017 Spring Washer Carbon Steel18 Spring - types 1900 (-75°F to 800°F) Alloy Steel

Spring - types 1920 (801°F to 1000°F) Inconel X750 or Tungsten19 Adjusting Screw 416SS20 Adjusting Screw Locknut 416SS21 Screwed Cap Carbon Steel27 Cap Gasket Soft Iron40 Eductor Tube 304SS41 Vent Pipe Plug Carbon Steel

1900Materials


For Gas, Vapor, and Liquid Service1900 Series

21

27

17

17

12

10

15

40

20

11

13

16

9

7

6

5

4

3

2

14

19

1

8

18

41

1900Materials

1900 (SRV-1/Q2.02)1900.17

1900-30 Series Bellows Assembly

Part Material

Standard Material for Bellows Type Safety Relief Valves

1 Base: Types 1905-30 thru 1918-30 SA216 Grade WCC Carbon SteelBase: Types 1920-30 thru 1928-30 SA217 Grade WC6 Alloy Steel

2 Nozzle 316SS3 Adjusting Ring 316SS4 Adjusting Ring Pin 316SS5 Adjusting Ring Pin Gasket Soft Iron6 Disc 316SS7 Disc Retainer Ring Inconel X7508 Disc Holder 316S9 Guide 316SS10 Guide Gasket Soft Iron11 Bonnet SA216 Grade WCC Carbon Steel12 Bonnet Gasket Soft Iron13 Base Stud B7 Alloy Steel14 Base Stud Nut 2H Carbon Steel15 Spindle 410SS16 Spindle Retainer Inconel X75017 Spring Washer Carbon Steel18 Spring - types 1900 (-75°F to 800°F) Alloy Steel

Spring - types 1920 (801°F to 1000°F) Inconel X750 or Tungsten19 Adjusting Screw 416SS20 Adjusting Screw Locknut 416SS21 Screwed Cap Carbon Steel27 Cap Gasket Soft Iron40 Bellows Assembly —

Bellows Inconel 625Bellows Ring & Bellows Flange 316L SS

41 Bellows Gasket Soft Iron

1900Materials


For Gas, Vapor, and Liquid Service1900-30 Series

21

27

13

12

10

3

20

19

15

9

5

6

2

1

8

16

11

14

4

7

41

VENT,DO NOT PLUG

17

18

17

40

1900Materials

1900 (SRV-1/Q2.02)1900.19

1900-35 Balanced Bellowswith Auxiliary Balancing Piston

Part Material

Standard Material for Balanced Piston Type Safety Relief Valves

Base: Types 1905-35 Thru 1918-35Base: Types 1920-35 Thru 1928-35

NozzleAdjusting Ring

Adjusting Ring PinAdjusting Ring Pin Gasket

DiscDisc Retainer Ring

Disc HolderGuide

Guide GasketPiston Guide

Piston Guide LockscrewPiston

Piston LockscrewSeal Ring

Seal Ring ExpanderBonnet

Bonnet GasketBase Stud

Base Stud NutSpindle

Spindle RetainerSpring Washer

Spring - types 1900 (-75°F to 800°F)Spring - types 1900 (801°F to 1000°F)

Adjusting ScrewAdjusting Screw Locknut

Screwed CapCap Gasket

Bellows AssemblyBellows

Bellows Ring and Bellows FlangeBellows Gasket

1

23456789101112131415161718192021222324

2526273346

47

SA216 Grade WCC Carbon SteelSA217 Grade WC6 Alloy Steel

316SS316SS316SS

Soft Iron316SS

Inconel X750316SS316SS

Soft Iron304SS

Carbon Steel304SS

Carbon SteelGraphitar Grade 67

410SSSA216 Grade WCC Carbon Steel

Soft IronB7 Alloy Steel

2H Carbon Steel410SS

Inconel X750Carbon SteelAlloy Steel

Inconel X750 or Tungsten416SS416SS

Carbon SteelSoft Iron

—Inconel 625316 L SSSoft Iron

1900Materials


For Gas, Vapor, and Liquid Service1900-35 Series

33

21

19

7

6

5

2

1

4

20

12

11

8

9

24

25

27

14

16

1513

26

17

23

23

18

10

46

47

3

22

1900Materials

1900 (SRV-1/Q2.02)1900.21

1900 Soft Seat (DA) Option

D Thru J Orifice

K Thru T Orifice

Part Name Materials2

Nozzle 316SSDisc 316SS

Disc Holder 316SSDisc Retainer Inconel X750

O-Ring Retainer 316SSRetainer Lock Screw(s) 316SS

O-Ring Seat Seal Select 1

NOTES: 1 Refer to pages 1900.35 & 1900.36 for O-Ring Selection (Durometerand Temperature Limits). See Technical Information Section for application.

2 Balance of Materials same as 1900 standard construction

Disc Holder

Disc Holder

Disc Retainer

Disc

Retainer Lock Screw

O-Ring Seat Seal

O-Ring Retainer

Nozzle

Retainer Lock Screw

Nozzle

O-Ring Seat Seal

O-Ring Retainer

1900Materials


NOTE: 1 Balance of materials same as 1900 standard construction.


Nozzle 316SSThermodisc™ 616SSDisc Retainer Inconel X750Disc Holder 316SS

Guide 316SSAdjusting Ring 316SS

1900 Steam Trim (TD) Option

Guide

Disc Retainer

Nozzle

Disc Holder

Thermodisc™

Adjusting Ring

1900Materials

1900 (SRV-1/Q2.02)1900.23

1900 Liquid Trim (LA) Option

Disc Holder

Disc

Nozzle

Guide

Disc Retainer

Adjusting Ring


Nozzle 316SSDisc 316SS

Disc Retainer Inconel X750Disc Holder 316SS

Guide 316SSAdjusting Ring 316SS

NOTE 1: Balance of materials same as 1900 standard construction.

1900Materials


The 1900 Flanged Series offers various material options to satisfy customer needs and API standards. The most common options are listed in this section.

These material options are not the only available options however. Inquire of Dresser Measurement for options not listed here.

Specify the material construction classification using the construction variations such as: S2, H4, etc.

Options included are:

PAGE NUMBERSour Gas Service (SG1, SG10, SG5, and SG15) 1900.25Hydrofluoric Acid Service (HA) 1900.26Stainless Steel (S2, S3, and S4) 1900.27Alloy 20 (A1, A2, A3,and A4) 1900.28Monel (M1, M1 (MB), M2, M3, and M4) 1900.29Hastelloy C (H1, H2, H3, and H4) 1900.30Low Temperature - Process Fluid (L1, L2, and L3) (For media temperatures to -450°F or -268°C) 1900.31Low Temperature - Ambient (C1) (For ambient temperatures to -50°F or -45.6°C) 1900.32High Temperature (T1 & T2) (For media temperatures to 1500°F or 816°C) 1900.33Lethal Service 1900.34O-Ring Selection 1900.35

Many other special options are available not necessarily of a material nature. These include, but are not limited to, special facings on connections orspecial connections. Contact the factory for any special requirements you may have.

1900 Special Material & Service Options

1900Materials

1900 (SRV-1/Q2.02)1900.25

Special Materials, Sour Gas Service1

Material requirements of NACE Standard MR-01-75 are applicable tosystems handling sour gas if the total operating pressure of the system is65 psia or greater and if the partial pressure of H2S in the gas is 0.05psia or greater.The SG10 (non-bellows) and SG15 (bellows) material selections aresatisfactory for applications in which the valve secondary pressure (outletside) does not exceed 65 psia (50 psig). Under valve relieving

conditions, 50 psig secondary pressure would not normally be exceededuntil the valve set pressure exceeds 450 psig (31.0 Bar).The SG1 (non-bellows) and SG5 (bellows) material selections complywith NACE standard MR-01-75.Specific applications may be referred to the factory for recommendations.

1900 Sour Gas (SG) Trims

Component

Base: Types 1905 thru 1918Base: Types 1920 thru 1928NozzleDiscBellows Assembly

FlangeBellowsRing

Adjusting RingAdjusting Ring PinDisc HolderGuideSpindleSpindle RetainerBonnetBase StudBase Stud NutSpringSpring WasherAdjusting ScrewAdjusting Screw LocknutDisc RetainerCapCap GasketBonnet GasketBellows GasketGuide GasketAdj. Ring Pin GasketEductor TubeBase Plug: Types 1905 thru 1918Base Plug: Types 1920 thru 1928Bonnet Plug

Construction Variation

SG14 SG103 SG53 & 4 SG153

SA216 WCC Carbon Steel SA216 WCC Carbon Steel SA216 WCC Carbon Steel SA216 WCC Carbon SteelSA217 WC6 Alloy Steel SA217 WC6 Alloy Steel SA217 WC6 Alloy Steel SA217 WC6 Alloy Steel

316SS 316SS 316SS 316SS316SS 316SS 316SS 316SS

— — — —N/A N/A 316L SS 316L SSN/A N/A Inconel 6255 Inconel 625N/A N/A 316L SS 316L SS

316SS 316SS 316SS 316SS316SS 316SS 316SS 316SS316SS 316SS 316SS 316SS316SS 316SS 316SS 316SS316SS 410SS 410SS 410SS

Inconel X750 Inconel X750 Inconel X750 Inconel X750SA216 WCC Carbon Steel SA216 WCC Carbon Steel SA216 WCC Carbon Steel SA216 WCC Carbon Steel

B7 Alloy Steel B7 Alloy Steel B7 Alloy Steel B7 Alloy Steel2H Carbon Steel 2H Carbon Steel 2H Carbon Steel 2H Carbon SteelInconel X750 2 2 2

316SS Carbon Steel Carbon Steel Carbon Steel316SS 416SS 416SS 416SS316SS 416SS 416SS 416SS

Inconel X750 Inconel X750 Inconel X750 Inconel X750Carbon Steel Carbon Steel Carbon Steel Carbon Steel

Soft Iron Soft Iron Soft Iron Soft IronSoft Iron Soft Iron Soft Iron Soft Iron

N/A N/A Soft Iron Soft IronSoft Iron Soft Iron Soft Iron Soft IronSoft Iron Soft Iron Soft Iron Soft Iron304SS 304SS N/A N/A

Carbon Steel Carbon Steel Carbon Steel Carbon Steel316SS 316SS 316SS 316SS

Carbon Steel Carbon Steel N/A N/A

Conventional Valves Bellows Valves

NOTES: 1 The materials in red denote variation from standard material construction.2 Alloy springs are used for temperatures up to 800°F (426.7°C) and are aluminum metallized.3 SG10 and SG15 are the same as standard valves except for springs being aluminum metallized.4 SG1 and SG5 are NACE MR-01-75 compliant.5 Heat treated

1900Materials


To meet the demanding requirements of the extremely corrosive HF Alkyservice, Dresser Measurement has, in conjunction with major designersand users in this industry, developed the 1900 HA variation. Extensiveuse of Monel Alloy 400, in the stress relieved condition for criticalcomponents, has been utilized for this option.NACE document 5A171 states, “In practice, occurrence of stress corrosioncracking may either be avoided by complete exclusion of oxygen or may

be minimized by stress relieving welded or cold formed parts.” The HAmaterials should not be confused with the M1 through the M4 materialsused for other corrosive applications.In addition to the special stress relieved conditioned Monel 400materials, a bellows seal and litharged cured soft seat has beenincorporated into this option. Long term applications have providedexcellent results in the most severe, moist, aerated, HF Alky service.

1900 Hydrofluoric Acid (HA) Service

Component

Special Materials, Hydrofluoric Acid Service1,2

BaseNozzleAdjusting RingAdjusting Ring pinAdj. Ring Pin GasketDiscDisc RetainerO-RingO-Ring RetainerRetainer Lock ScrewDisc HolderGuideGuide GasketBellows Assembly

FlangeBellowsRing

Bellows GasketBonnetBonnet GasketBase StudBase Stud NutSpindleSpindle RetainerSpring (-20°F to 800°F)Spring WasherAdjusting ScrewAdjusting Screw LocknutCapCap GasketLimit Washer

SA216 WCC (radiographed per supplement S5)Monel 400 (stressed relieved)

Monel 400Monel 400Monel 400

Monel 400 (stressed relieved)Inconel X750

Viton A (litharge cured)Monel 400 (stressed relieved)

Monel 400Monel 400 (stressed relieved)

Monel 400Monel 400

Monel 400 (stressed relieved)Monel 400Monel 400Monel 400

Garlock Gylon 35101SA216 WCC Carbon Steel

Monel 400K MonelK Monel

Monel 400Inconel X750

Carbon Steel (nickel plated)Carbon SteelMonel 400Monel 400Carbon SteelMonel 400Monel 400


HA

NOTES: 1 The materials in red denote variation from standard material construction.2 To specify valves, add material designation to the valve type, 1910L/HA or 1910-30L/HA.

1900Materials

1900 (SRV-1/Q2.02)1900.27

Corrosive Service

Corrosive Service, Stainless Steel Material1,2

Component

Common Components

Nozzle 316SS 316SS 316SSDisc 316SS 316SS 316SSDisc Retainer Inconel X750 Inconel X750 Inconel X750Disc Holder 316SS 316SS 316SSAdjusting Ring 316SS 316SS 316SSAdjusting Ring Pin 316SS 316SS 316SSSpindle Retainer Inconel X750 Inconel X750 Inconel X750Adjusting Ring Pin Gasket Monel Monel MonelGuide Gasket Monel Monel MonelBase, Bonnet, Cap Carbon Steel 316SS 316SSBase Studs B7 Alloy Steel Gr. B8M Gr. B8MBase Stud Nuts 2H Carbon Steel Gr. 8M Gr. 8M

Guide 316SS 316SS 316SSSpindle 316SS 316SS 316SSAdjusting Screw 316SS 316SS 316SSAdjusting Screw Locknut 316SS 316SS 316SSSpring Alloy Steel Alloy Steel 316SSSpring Washers Carbon Steel Carbon Steel 316SSEductor Tube 304SS 316SS 316SSBonnet Gasket Monel Monel MonelCap Gasket Monel Monel Monel

Guide 316SS 316SS 316SSSpindle 410SS 316SS 316SSAdjusting Screw 416SS 316SS 316SSAdjusting Screw Locknut 416SS 316SS 316SSBellows Assembly — — —

Flange 316L SS 316L SS 316L SSBellows Inconel 625 Inconel 625 Inconel 625Ring 316L SS 316L SS 316L SS

Bellows Gasket Monel Monel MonelSpring Alloy Steel Alloy Steel 316SSSpring Washer Carbon Steel Carbon Steel 316SSBonnet Gasket Soft Iron Monel MonelCap Gasket Monel Monel Monel

S2 S3 S4

Non-Bellows Valve Components

Bellows Valve Components

NOTES: 1 The materials in red denote variation from standard material construction.2 To specify valves, add material designation to the valve type, 1910L/S3 or 1910-30L/S3.


1900Materials


Corrosive Service

Corrosive Service, Alloy 20 Material1,2

Component

Common Components

Nozzle Alloy 20 Alloy 20 Alloy 20 Alloy 20Disc Alloy 20 Alloy 20 Alloy 20 Alloy 20Disc Retainer Inconel X750 Inconel X750 Inconel X750 Inconel X750Disc Holder 316SS Alloy 20 Alloy 20 Alloy 20Adjusting Ring 316SS Alloy 20 Alloy 20 Alloy20Adjusting Ring Pin 316SS Alloy 20 Alloy 20 Alloy 20Spindle Retainer Inconel X750 Inconel X750 Inconel X750 Inconel X750Adjusting Ring Pin Gasket Soft Iron Monel Monel MonelGuide Gasket Soft Iron Monel Monel MonelBase, Bonnet, Cap Carbon Steel Carbon Steel 3 3

Base Studs B7 Alloy Steel B7 Alloy Steel Alloy 20 Alloy 20Base Stud Nuts 2H Carbon Steel 2H Carbon Steel Alloy 20 Alloy 20

Guide 316SS Alloy 20 Alloy 20 Alloy 20Spindle 410SS Alloy 20 Alloy 20 Alloy 20Adjusting Screw 416SS Alloy 20 Alloy 20 Alloy 20Adjusting Screw Locknut 416SS Alloy 20 Alloy 20 Alloy 20Spring Alloy Steel Alloy Steel Alloy Steel Alloy 20Spring Washers Carbon Steel Carbon Steel Carbon Steel Alloy 20Eductor Tube 304SS 304SS Alloy 20 Alloy 20Bonnet Gasket Soft Iron Monel Monel MonelCap Gasket Soft Iron Monel Monel Monel

Guide 316SS 316SS Alloy 20 Alloy 20Spindle 410SS 410SS Alloy 20 Alloy 20Adjusting Screw 416SS 416SS Alloy 20 Alloy 20Adjusting Screw Locknut 416SS 416SS Alloy 20 Alloy 20Bellows Assembly — — — —

Flange 316L SS Alloy 20 Alloy 20 Alloy 20Bellows Inconel 625 Alloy 20 Alloy 20 Alloy 20Ring 316L SS Alloy 20 Alloy 20 Alloy 20

Bellows Gasket Soft Iron Monel Monel MonelSpring Alloy Steel Alloy Steel Alloy Steel Alloy 20Spring Washer Carbon Steel Carbon Steel Carbon Steel Alloy 20Bonnet Gasket Soft Iron Soft Iron Monel MonelCap Gasket Soft Iron Monel Monel Monel

A1 A2 A3 A4



NOTES: 1 The materials in red denote variation from standard material construction.2 To specify valves, add material designation to the valve type, 1910L/A3 or 1910-30L/A3.3 ASME SA351 grade CN7M alloy steel.


1900Materials

1900 (SRV-1/Q2.02)1900.29

Corrosive Service

Corrosive Service, Monel Material1,2

Component

Common Components

Nozzle Monel Monel Monel Monel MonelDisc Monel Monel Monel Monel MonelDisc Retainer Inconel X750 Inconel X750 Inconel X750 Inconel X750 Inconel X750Disc Holder 316SS Monel Monel Monel MonelAdjusting Ring 316SS Monel Monel Monel MonelAdjusting Ring Pin 316SS Monel Monel Monel MonelSpindle Retainer Inconel X750 Inconel X750 Inconel X750 Inconel X750 Inconel X750Adjusting Ring Pin Gasket Soft Iron Monel Monel Monel MonelGuide Gasket Soft Iron Monel Monel Monel MonelBase, Bonnet, Cap Carbon Steel Carbon Steel Carbon Steel Monel MonelBase Studs B7 Alloy Steel B7 Alloy Steel B7 Alloy Steel K Monel K MonelBase Stud Nuts 2H Carbon Steel 2H Carbon Steel 2H Carbon Steel K Monel K Monel

Guide 316SS 316SS Monel Monel MonelSpindle 410SS 410SS Monel Monel MonelAdjusting Screw 416SS 416SS Monel Monel MonelAdjusting Screw Locknut 416SS 416SS Monel Monel MonelSpring Alloy Steel Alloy Steel Alloy Steel Alloy Steel InconelSpring Washers Carbon Steel Carbon Steel Carbon Steel Carbon Steel MonelEductor Tube 304SS 304SS 304SS Monel MonelBonnet Gasket Soft Iron Monel Monel Monel MonelCap Gasket Soft Iron Monel Monel Monel Monel

Guide 316SS 316SS 316SS Monel MonelSpindle 410SS 410SS 410SS Monel MonelAdjusting Screw 416SS 416SS 416SS Monel MonelAdjusting Screw Locknut 416SS 416SS 416SS Monel MonelBellows Assembly — — — — —

Flange 316L SS 316L SS Monel Monel MonelBellows Inconel 625 Inconel 625 Monel Monel MonelRing 316L SS 316L SS Monel Monel Monel

Bellows Gasket Soft Iron Monel Monel Monel MonelSpring Alloy Steel Alloy Steel Alloy Steel Alloy Steel InconelSpring Washers Carbon Steel Carbon Steel Carbon Steel Carbon Steel MonelBonnet Gasket Soft Iron Soft Iron Soft Iron Monel MonelCap Gasket Soft Iron Monel Monel Monel Monel

M1 MB (M 1 ) M2 M3 M4



NOTES: 1 The materials in red denote variation from standard material construction.2 To specify valves, add material designation to the valve type, 1910L/M3 or 1910-30L/M3.


1900Materials


Corrosive Service

Corrosive Service, Hastelloy Material1,2

Component

Common Components

Nozzle Hastelloy C Hastelloy C Hastelloy C Hastelloy CDisc Hastelloy C Hastelloy C Hastelloy C Hastelloy CDisc Retainer Inconel X750 Inconel X750 Inconel X750 Inconel X750Disc Holder 316SS Hastelloy C Hastelloy C Hastelloy CAdjusting Ring 316SS Hastelloy C Hastelloy C Hastelloy CAdjusting Ring Pin 316SS Hastelloy C Hastelloy C Hastelloy CSpindle Retainer Inconel X750 Inconel X750 Inconel X750 Inconel X750Adjusting Ring Pin Gasket Soft Iron Monel Monel MonelGuide Gasket Soft Iron Monel Monel MonelBase, Bonnet, Cap Carbon Steel Carbon Steel Hastelloy C Hastelloy CBase Studs B7 Alloy Steel B7 Alloy Steel Hastelloy C Hastelloy CBase Stud Nuts 2H Carbon Steel 2H Carbon Steel Hastelloy C Hastelloy C

Guide 316SS Hastelloy C Hastelloy C Hastelloy CSpindle 410SS Hastelloy C Hastelloy C Hastelloy CAdjusting Screw 416SS Hastelloy C Hastelloy C Hastelloy CAdjusting Screw Locknut 416SS Hastelloy C Hastelloy C Hastelloy CSpring Alloy Steel Alloy Steel Alloy Steel Hastelloy CSpring Washers Carbon Steel Carbon Steel Carbon Steel Hastelloy CEductor Tube 304SS 304SS Hastelloy C Hastelloy CBonnet Gasket Soft Iron Monel Monel MonelCap Gasket Soft Iron Monel Monel Monel

Guide 316SS 316SS Hastelloy C Hastelloy CSpindle 410SS 410SS Hastelloy C Hastelloy CAdjusting Screw 416SS 416SS Hastelloy C Hastelloy CAdjusting Screw Locknut 416SS 416SS Hastelloy C Hastelloy CBellows Assembly — — — —

Flange 316L SS Hastelloy C Hastelloy C Hastelloy CBellows Inconel 625 Hastelloy C Hastelloy C Hastelloy CRing 316L SS Hastelloy C Hastelloy C Hastelloy C

Bellows Gasket Soft Iron Monel Monel MonelSpring Alloy Steel Alloy Steel Alloy Steel Hastelloy CSpring Washer Carbon Steel Carbon Steel Carbon Steel Hastelloy CBonnet Gasket Soft Iron Soft Iron Monel MonelCap Gasket Soft Iron Monel Monel Monel

H1 H2 H3 H4



NOTES: 1 The materials in red denote variation from standard material construction.2 To specify valves, add material designation to the valve type, 1910L/H3 or 1910-30L/H3.


1900Materials

1900 (SRV-1/Q2.02)1900.31

Low Temperature

Special Materials for Low Process Fluid Temperature1,2

Component

Common Components

Nozzle 316SS 316SS 316SSDisc 316SS 316SS 316SSDisc Retainer Inconel X750 Inconel X750 Inconel X750Disc Holder 316SS 316SS 316SSAdjusting Ring 316SS 316SS 316SSAdjusting Ring Pin 316SS 316SS 316SSSpindle Retainer Inconel X750 Inconel X750 Inconel X750Cap Gasket Monel Monel MonelAdjusting Ring Pin Gasket Monel Monel MonelGuide Gasket Monel Monel MonelBase 316SS 316SS 316SSBonnet Carbon Steel 316SS 316SSCap Carbon Steel 316SS 316SSBase Studs Gr. B8M Gr. B8M Gr. B8MBase Stud Nuts Gr. 8M Gr. 8M Gr. 8M

Guide 316SS 316SS 316SSSpindle 410SS 316SS 316SSAdjusting Screw 416SS 316SS 316SSAdjusting Screw Nut 416SS 316SS 316SSSpring Alloy Steel 316SS 316SSSpring Washers 316SS 316SS 316SSEductor Tube 304SS 316SS 316SSBonnet Gasket Monel Monel Monel

Guide 316SS 316SS 316SSSpindle 410SS 316SS 316SSAdjusting Screw 416SS 316SS 316SSAdjusting Screw Nut 416SS 316SS 316SSBellows Assembly — — —

Flange 316L SS 316L SS 316L SSBellows Inconel 625 Inconel 625 316L SSRing 316L SS 316L SS 316L SS

Bellows Gasket Monel Monel MonelSpring Alloy Steel 316SS 316SSSpring Washer Carbon Steel 316SS 316SSBonnet Gasket Monel Monel Monel



NOTES: 1 The materials in red denote variation from standard material construction.2 To specify valves, add material designation to the valve type, 1910L/L3 or 1910-30L/L3.3 SA 352LCC material can be utilized down to -50°F (-45°C) for bases, bonnets, or caps when requested.

-21°F to -75°F -76°F to -150°F -151°F to -450°F-29°C to -59°C -60°C to -101°C -102°C to -268°C

L13 L2 L3

1900Materials


Low Temperature

Special Materials for Low Ambient Temperatures(to -50°F or -45°C1,2)

Component

Common Components

Nozzle 316SSDisc 316SSDisc Retainer Inconel X750Disc Holder 316SSAdjusting Ring 316SSAdjusting Ring Pin 316SSSpindle Retainer Inconel X750Adjusting Ring Pin Gasket Soft IronGuide Gasket Soft IronBase, Bonnet, Cap LCC Carbon SteelBase Studs B8MBase Stud Nuts 8M

Guide 316SSSpindle 410SSAdjusting Screw 416SSAdjusting Screw Nut 416SSSpring Alloy SteelSpring Washers 316SSEductor Tube 304SSBonnet Gasket Soft IronCap Gasket Soft Iron

Guide 316SSSpindle 410SSAdjusting Screw 416SSAdjusting Screw Nut 416SSBellows Assembly —

Flange 316L SSBellows Inconel 625Ring 316L SS

Bellows Gasket Soft IronSpring Alloy SteelSpring Washers 316SSBonnet Gasket Soft IronCap Gasket Soft Iron

C13



NOTES: 1 The materials in red denote variation from standard material construction.2 Media temperature may impact valve temperature. Contact factory for assistance.3 To specify valves, add material designation to the valve type, 1910L/C1 or 1910-30L/C1.


1900Materials

1900 (SRV-1/Q2.02)1900.33

High TemperatureSpecial Materials for Low Process Fluid Temperature1,2

Component

Common Components

Nozzle 316SS 316SS/StellitedDisc 316SS Inconel X750Disc Retainer Inconel X750 Inconel X750Disc Holder 316SS Glide -Aloy Treated 316SS Glide -Aloy TreatedAdjusting Ring 316SS 316SSAdjusting Ring Pin 316SS 316SSSpindle Retainer Inconel X750 Inconel X750Cap Gasket Monel N/AAdjusting Ring Pin Gasket Monel MonelGuide Gasket Monel MonelBase 316SS 316SSBonnet 316SS Slotted 316SSCap Carbon Steel Carbon SteelBase Studs Gr. B8M Gr. B8MBase Stud Nuts Gr. 8M Gr. 8MDeflector Plate N/A 304SS

Guide 316SS 316SS Glide-Aloy TreatedSpindle 410SS 316SS/StellitedAdjusting Screw 416SS 416SSAdjusting Screw Locknut 416SS 416SSSpring Inconel X750 or Tungsten Inconel X750 or TungstenSpring Washers Carbon Steel 410SSEductor Tube 304SS N/ABonnet Gasket Monel N/A

Guide 316SS 316SS Glide-Aloy TreatedSpindle 410SS 316SS/StellitedAdjusting Screw 416SS 416SSAdjusting Screw Locknut 416SS 416SSBellows Assembly

Flange Inconel 625 Inconel 625Bellows Inconel 625 Inconel 625Ring Inconel 625 Inconel 625

Bellows Gasket Monel MonelSpring Inconel X750 or Tungsten Inconel X750 or TungstenSpring Washer Carbon Steel 410SSBonnet Gasket Monel N/A



NOTES: 1 The materials in red denote variation from standard material construction.2 To specify valves, add material designation to the valve type, 1920L/T2 or 1920-30L/T2.3 All T2 valves have ANSI Class 300 outlet flanges.4 Consult factory for temperatures above 1500°F (815°C).

1001°F to 1200°F 1201°F to 1500°F538°C to 649°C 649°C to 815°C

T1 T23,4

1900Materials


In some industries served by CONSOLIDATED, there are lethal service applications. These applications require special consideration as detailed below. Should you feel that yourapplication may be for lethal service, please review this information. “LETHAL SERVICE” should be prominently indicated in your discussions, inquiries, or purchase orders.

I. DefinitionASME B & PVC, Section VIII (Division 1) states that it is the responsibility of theuser to state that the valve will be in lethal service.

IMPORTANT

CONSOLIDATED does not determine if a fluid is lethal. The customer must specifythe fluid is lethal and his paperwork should be clearly stamped, identifying theapplication as a lethal fluid.

The ASME Code definition is as follows:

Lethal Substance - Poisonous gases or liquids of such a nature that a verysmall amount of the gas or the vapor of the liquid, mixed or unmixed withair, is dangerous to life when inhaled.

ASME B31.3, a chemical plant and petroleum refining piping standard, suppliesa similar definition, which they call a “Category M Fluid Service”.

II. Valve Requirements for Lethal Service ApplicationA. Only closed bonnet valves with a screwed or bolted cap or packed lever

can be used for lethal service.B. Valve model numbers that are acceptable for lethal service after

modification are 1905/1910 conventional and bellows flanged valves.C. It is recommended that a soft seat design be used for improved tightness.D. When service temperature exceeds 450°F (232°C), bolting material

review is required by Dresser Measurement Engineering.E. Use non-sparking material for flammable media. Examples are Bronze,

316 Stainless Steel, and Monel.

III. Base, Bonnet, and Cap Casting RequirementsA. Each casting requires 100% visual inspectionB. Each casting requires complete surface examination either by magnetic

particle for steel castings or liquid penetrant for stainless castings.C. Each casting shall have radiographic examination.D. All repairs to base, bonnet, and cap castings must be documented.E. All threads must be inspected for continuity of threadsF. Hydrotest hold time for ten (10) minutes.G. The base drain plug is to be sealed by seal welding a plug of the same

material as the base.H. The bonnet vent is to be sealed in accordance with paragraph G for

conventional valves (non -bellows). Bellows valves are to have the ventconnection vented to a safe location.

IV. Additional RequirementsA. Each bellows requires a mass spectrometer leak test to 1 x 10-7 cc/sec to

be imposed.B. It is necessary to seal the nozzle -base joint. The customer must state

their preference between a seal weld or O -Ring joint, depending onconformance of their maintenance practice.

C. The nozzle and disc require hydrotesting with a hold time for a minimumof ten (10) minutes.

D. Cleaning procedures and lubricants used shall be acceptable for lethal service.E. Back pressure testing is required. Documentation of test is required.

1900 Valves for Lethal Service

1900Materials

1900 (SRV-1/Q2.02)1900.35

O-Ring Selection Table - Durometer (USCS Units)

1900D & E

1900F

1900G

1900H

1900J

1900K

1900L

1900M

1900N

1900P

1900Q

1900R

19004

1900V

1900W

5 to 3505 to 3505 to 3755 to 3755 to 3155 to 2355 to 2355 to 2355 to 2355 to 2005 to 1705 to 1205 to 80

––

120 to 800120 to 800125 to 780140 to 78045 to 780125 to 58075 to 58070 to 58040 to 58030 to 50040 to 42025 to 30015 to 20015 to 3007 to 300


2000 to 60002000 to 60001900 to 37051900 to 27501900 to 27001400 to 22201400 to 1500

––––––

15 to 30015 to 300


Valve Type70 - 751501 902 Teflon3

-300°F to 200°FTeflon3

201°F to 500°F

Set Pressure Range (psig)

O-Ring Selection

NOTES: 1 Maximum set pressure for silicone compounds is half of the maximum value.2 The E962-90D 0-Ring can be used in steam service in applications down to 15 psig.3 Teflon will not be supplied for conditions that deviate from these ranges.

1900Materials


O-Ring Temperature Limits

Nitrile

Fluorocarbon

Neoprene

Teflon

Silicone

Kalrez3

Ethylene/Propylene

Materials Durometer Description5 Temp. Limits (°F) Temp. Limits (°C)

507090704

5070

75 & 802

9075

507590

5070

5070

N/A

82759165

N299-50 or N1009-50N674-70N552-90

N1173-70

E981-50E603-70

E740-75 & E515-80E962-901

E962-75

V986-50V747-75 or V884-75V894-90 or V709-90

C267-50C944-70 or C873-70

S595-50S604-70

Teflon

1050LF407930181058

-45 to +225-40 to +250-40 to +350-25 to +300

-65 to +212-65 to +212-70 to +250-70 to +500

-60 to +250/400

-15 to +400-15 to +400-15 to +400

-45 to +300-45 to +300

-65 to +437-65 to +437

-300 to +500

-42 to +550-58 to +601-35 to +601-40 to +500

-43 to +107-40 to +121-40 to +177-31 to +149

-53 to +100-53 to +100-57 to +121-57 to +260

-51 to +121/204

-26 to +204-26 to +204-26 to +204

-43 to +149-43 to +149

-53 to +225-53 to +225

-184 to +260

-41 to +288-50 to +316-37 to +316-40 to +260

O-Ring Selection

NOTES: 1 EPR962-90D can be used on steam service to lower pressure limit of 15 psig.2 Set pressure ranges from durometer table shall apply to these compounds (for nuclear service, radiation environment).3 Consult factory before selecting.4 Consult factory before using. For use with freon 134A/ester oil service.5 Refer to Technical Section for O -Ring Selection Tables for various fluids.

1900Accessories

1900 (SRV-1/Q2.02)1900.37

Lifting MechanismsThe purpose of the lifting mechanism is to open the valve when thepressure under the valve disc is lower than the set pressure. Thesemechanisms are made in three basic types: plain lever, packed lever, andair-operated lifting device. The lifting lever may be used as follows:(1) to lift the disc from the valve seat periodically during the operation ofequipment to be sure that the disc holder is not frozen in the guide as aresult of corrosion, coking, sulphur deposits, etc. This will ensure protectionof the unit at all times. Operating pressure under the disc should beapproximately 75% of the set pressure when lifting in accordance with theASME Code; otherwise the lever assembly could be damaged.(2) to remove foreign particles which are sometimes trapped under theseat as the valve closes. Immediate cleaning of the valve seat with thepressure of the media, by use of the lifting lever, will correct an otherwiseleaking valve, save maintenance costs at a later date and in some caseswill avoid a shutdown of the equipment.(3) to vent equipment to the atmosphere or discharge piping.

Plain LeverThis lever assembly is not pressure - tight and should not be used whereback pressure is present or where the escape of vapor discharging froman open valve is undesirable around the lever assembly.

Packed LeverAs indicated by the name, this lifting lever assembly is packed around thelever shaft, so that leakage will not occur around the upper part of thevalve when the valve is open or when back pressure is present. Thepacked lifting lever should be used when positive protection againstleakage is required.

Bolted CapCONSOLIDATED Standard Safety Relief Valves are supplied with screwedcaps but bolted caps are available.

GagThe purpose of the gag is to hold the safety relief valve closed whileequipment is being subjected to an operational hydrostatic test. This isthe only purpose for which the gag is intended, and it can beaccomplished by pulling the gag hand - tight. Force should never beused. The gag should never be left in the valve during the operationof the equipment. It should be removed each time after using and hungin a safe, convenient location and the sealing plug reinstated andproperly torqued.

1900 Caps, Levers, and Accessories

ASME Codes require that a lifting lever must be supplied with the valve for steam, air, and hot water service over 140°F (60°C) applications.However, it need not be a sealed lifting mechanism. The ASME Codes do recommend that sealed lifting mechanisms be used; however, they arenot mandatory. The lifting lever may be omitted under Code Case 2203. However, Dresser requires that all orders for pressure relief valves withoutlevers or blowdown valves for steam, air, and water over 140°F (60°C) state specifically that the valves are being purchased per Code Case 2203.The purchaser is responsible for obtaining jurisdictional authorization for use of Code Case 2203. Thermal Relief Valves: When ASME Code stamped valves are used for thermal relief applications, the ASME Code guidelines shall be followed inregard to lifting levers.

ASME B & PVC, Section VIII, Lever Requirements

1900Accessories


Air-Operated Lifting DeviceThe Air Operated Lifting Device uses an air cylinder toobtain lifting power to open the valve from a remotecontrol station. Normal operation of the safety reliefvalve is independent of the lifting device. Please specify actual required conditions, otherwisethe device will be supplied to operate with at least75% of set pressure under the disc in accordancewith the ASME Code. Requirements for special application: valve size, setpressure, minimum pressure at which the valvemust be kept open, air pressure for operator, orelectrical characteristics for solenoid operation.Regulated air, not to exceed 100 psig, is requiredfor operation.

Valve Position Indicators

Slotted Bonnet Steam Jacket

Valve Position Indicators in general, are a micro switch apparatus used for remote indication of the opening of a Safety Relief Valve. It is designed toactivate warning devices such as control panel lights or auditory indicators. This option enhances control function of operators located in remote

control stations. Please advise voltage requirements for proper selection of micro switch when ordering.

Vent Bug Screen(Available in 1900-30 bellows valve only)

Air Cylinder

Mounting Stud

Stud Nut

Pin

Lever

Clevis

Lifting Fork

Mounting Plate

Cap

Release Locknut

Release Nut

Cap Bolt

Cap Gasket

Spindle

Lever Shaft

Lever Shaft Collar

Collar Retaining Ring

Packing Nut

Packing Lever Nut

1900Accessories

1900 (SRV-1/Q2.02)1900.39

Packed Lever

As indicated by the name, this lifting lever assembly is packed around the lever shaft, so that leakage will not occur around the upper part ofthe valve when the valve is open or when back pressure is present. The packed lifting lever should be used when positive protection againstleakage is required.

Plain Lever

This lever assembly is not pressure - tight and should not be used where back pressure is present or where the escape of vapor discharging from anopen valve is undesirable around the lever assembly. It is designed with either a one or two -piece lever as illustrated below. The design is basedon valve size and/or valve set pressure.

36

35

26

28

2924

40

One-Piece Lever Design Two-Piece Lever Design

31

33

23

27

25

28

29

30

32

34

1900Accessories


Bolted Cap

CONSOLIDATED standard safety relief valves are supplied with screwed caps, but bolted caps are available.

Cap with Gag

The purpose of the gag is to hold the safety relief valve closed while equipment is being subjected to an operational hydrostatic test. This is the onlypurpose for which the gag is intended, and it can be accomplished by pulling the gag hand - tight. Force should never be used. The gag should neverbe left in the valve during the operation of the equipment. It should be removed each time after using and hung in a safe, convenient location.

22

25

27

39

3837

1900Accessories

1900 (SRV-1/Q2.02)1900.41

NOTES: 1 The materials in red denote variation from standard material construction.2 Gasket material is Monel for A2, H2, MB, M2 and S2 construction.

Cap and Lever Construction1

Standard, Alloy, and Hastelloy Material

Cap Carbon Steel Alloy 20 Hastelloy C Carbon SteelCap Bolts Carbon Steel Alloy 20 Hastelloy C Carbon SteelCap Gasket2 Soft Iron Monel Monel MonelLever Malleable Iron Malleable Iron Malleable Iron Malleable IronLever Shaft 410/416SS 410/416SS 410/416SS 410/416SSPacking Grafoil Grafoil Grafoil Grafoil or GraphlockPacking Nut 410/416SS 410/416SS 410/416SS 410/416SSLifting Fork Malleable Iron Malleable Iron Malleable Iron Malleable IronRelease Nut Carbon Steel Carbon Steel Carbon Steel Carbon SteelRelease Lock Nut Carbon Steel Carbon Steel Carbon Steel Carbon Steel

Gag Bolt Carbon Steel Carbon Steel Carbon Steel Carbon SteelSealing Plug Carbon Steel Alloy 20 Hastelloy C Carbon SteelPlug Gasket2 Soft Iron Monel Monel Monel

Cap Carbon Steel Alloy 20 Hastelloy C Carbon SteelCap Bolts Carbon Steel Alloy 20 Hastelloy C Carbon SteelCap Gasket2 Soft Iron Monel Monel Monel

Cap Malleable Iron N/A N/A Malleable IronCap Set Screw Carbon Steel N/A N/A Carbon SteelTop Lever Malleable Iron N/A N/A Malleable IronDrop Lever Malleable Iron N/A N/A Malleable IronRelease Nut Carbon Steel N/A N/A Carbon SteelRelease Lock Nut Carbon Steel N/A N/A Carbon SteelPlain Lever (One Piece) Malleable Iron N/A N/A Malleable Iron

23252730323334312829

24263536282940

222527

373839

Gag

Bolted Cap

Plain Lever

Packed Lever

Cap Type Component Standard, A1, A2, H1, H2,L1, M1, MB, M2, S2, T1, T2

Alloy 20

A3 and A4

Hastelloy

H3 and H4

HF Alky

HA


1900Accessories


NOTE: 1 The materials in red denote variation from standard material construction.

Cap and Lever Construction1

Monel, Stainless, and Low Temperature Material

Cap Monel 316SS 316SSCap Bolts Monel K500 B8M B8MCap Gasket Monel Monel MonelLever Malleable Iron Malleable Iron Malleable IronLever Shaft 410/416SS 316SS 410/416SSPacking Grafoil Grafoil GrafoilPacking Nut 410/416SS 316SS 410/416SSLifting Fork Malleable Iron 316SS 316SSRelease Nut Carbon Steel 316SS 316SSRelease Lock Nut Carbon Steel 316SS 316SS

Gag Bolt Carbon Steel Carbon Steel Carbon SteelSealing Plug Monel 316SS 316SSPlug Gasket Monel Monel Monel

Cap Monel 316SS 316SSCap Bolts Monel K500 B8M B8MCap Gasket Monel Monel Monel

Cap N/A 316SS 316SSCap Set Screw N/A 316SS 316SSTop Lever N/A Malleable Iron Malleable IronDrop Lever N/A Malleable Iron Malleable IronRelease Nut N/A Carbon Steel Carbon SteelRelease Lock Nut N/A Carbon Steel Carbon SteelPlain Lever N/A Malleable Iron Malleable Iron

23252730323334312829

24263536282940

222527

373839

Gag

Bolted Cap

Plain Lever

Packed Lever

Cap Type Component Stainless

S3 and S4

Monel

M3 and M4

Low Temperature

L2 and L3


1900Accessories

1900 (SRV-1/Q2.02)1900.43

Jacketing of Relief ValvesCONSOLIDATED valve offers simple solutions to your heating problems:Bolt - on Jackets.Viscous materials that freeze or harden in relief valve nozzles createhazardous conditions. Process pipe jacketing or tracing may not providesufficient heat to the area in and around the relief valve seat. During apressure surge, some of the solid materials may stick in and around theseating area, keeping the valve from functioning and re-seating properly.This would result in leakage around the valve seating surface.The solution to this problem is the Bolt-on Jacket. This jacket is a twopiece aluminum casting with a steel pressure chamber embedded in thealuminum jacket casting. The pressure chamber is fabricated of standardpressure vessel materials for various heating fluids and servicetemperatures. The chamber is designed and tested in accordance with theASME B & PVC, Section VIII, Div. I. The jacket casting conducts heat fromthe pressure chamber and rapidly distributes it evenly over the outersurface of the relief valve.The aluminum casting distributes heat only. It carries no pressure load atany time. Heating fluid is transferred from one half of the jacket to theother by an external connector. A thin layer of heat transfer cement isused between the jacket and the relief valve to promote effective heattransfer by filling any air gaps between the jacket and the relief valve.Bolt - on Jacket halves bolt together for quick installation and unbolt forready access to the relief valve for easy maintenance. The jackets coverthe jacket fully from flange to flange providing uniform heat to all processwetted surfaces. Standard service ratings for the jacket are 150 psig and500°F. Higher ratings are available upon request.Bolt -on Jackets may be ordered with adjacent flange coverage and with avariety of heating medium connections. Canadian Registration is availablefor all provinces.Bolt - on Jackets are operating successfully on relief valves in manydifferent process service applications world wide. Customers shouldconsider jacketing the relief valves whenever the adjacent vessel or pipingis heated in some manner. The following lists process applications thattypically require jacketing of the relief valve.

• Acrylic Acid• Ammonium Nitrate• Coal Tars• Caprolactam• Cyanuric Chloride• DMT• DNT• Fluoropolymers• LLDPE• Olefins• Phosphorous• Polypropylene• Polystyrene Resins• Phthalic Anhydride• Sulphuric Acid• Sulphur Dioxide• Some Surfactants• Tall Oils• TMA

Bolt-on Jackets

1900Accessories


To ensure we provide the proper jacket coverage; please answer the following questions:(1) Is the process operating at elevated temperatures?(2) What is the process?(3) What is the temperature of the process being maintained?(4) What heating medium is being used in your jacket? What pressure and temperature is this medium?(5) What type of jacket connections are required?(6) How is the temperature being maintained on the process piping and other equipment (valves, pumps, meters, etc.)?The relief valve will probably need a Bolt - on Jacket if it is operating in one of the process services listed above or if the adjacent pipingand equipment is heated.Contact the Factory for assistance.

Typical Bolt-on Jacket

1900Dimensions & Weights

1900 (SRV-1/Q2.02)1900.45

This table applies to the standard 1900 Series regardless of materials ofconstruction.The tables state the inlet flange size of the valve and the flange ratingfollowed by the outlet flange size and the flange rating.

EXAMPLE: 1 - 150 x 2 - 150

Inlet is 1" size with a Class 150# flange. Outlet is 2" size with a Class150# flange.

If the valve you are reviewing has an inlet or outlet size different from thatstated, the dimensions “A” through “S” and weight may not apply.

NOTE: “USCS” Units refers to “U.S. Customary System” Units, the adapted U.S.standard formerly recognized as “English” Units.

1900 Flanged Series

Drain

1900Conventional

Valve CD

A

S

B



1900 Series ValvesUSCS Dimensions (in.) and Weights (lbs.)

Drain

Approx.Weight (lbs.)SType A B

STD BellowsD

C

1 - 150 x 2 - 1501 - 150 x 2 - 150

1-1/2 - 150 x 2 - 1501-1/2 - 150 x 3 - 150*1-1/2 - 150 x 3 - 150

2 - 150 x 3 - 1503 - 150 x 4 - 1503 - 150 x 4 - 1504 - 150 x 6 - 1504 - 150 x 6 - 1504 - 150 x 6 - 1506 - 150 x 8 - 1506 - 150 x 8 - 1508 - 150 x 10 - 15010 - 150 x 14 - 15012 - 150 x 16 - 150

1 - 300 x 2 - 1501 - 300 x 2 - 150

1-1/2 - 300 x 2 - 1501-1/2 - 300 x 3 - 150*1-1/2 - 300 x 3 - 150

2 - 300 x 3 - 1503 - 300 x 4 - 1503 - 300 x 4 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1506 - 300 x 8 - 1506 - 300 x 8 - 1508 - 300 x 10 - 15010 - 300 x 14 - 15012 - 300 x 16 - 150

1905D1905E1905F1905G1905H1905J1905K1905L1905M1905N1905P1905Q1905R1905T1905V1905W1906D1906E1906F1906G1906H1906J1906K1906L1906M1906N1906P1906Q1906R1906T1906V1906W

4-1/84-1/84-7/84-7/85-1/85-3/86-1/86-1/8

77-3/47-1/89-7/169-7/1610-7/8

1214

4-1/84-1/84-7/84-7/85-1/85-3/86-1/86-1/8

77-3/47-1/89-7/169-7/1610-7/8

1214

4-1/24-1/24-3/44-3/44-7/84-7/86-3/86-1/27-1/48-1/4

99-1/29-1/2

111616

4-1/24-1/24-3/44-3/44-7/84-7/86-3/86-1/27-1/48-1/4

99-1/29-1/2

111616

1717

17-3/417-3/419-1/221-1/424-1/228-3/429-3/4

3334-1/4

4143

47-1/262701717

17-3/417-3/419-1/221-1/424-1/228-3/429-3/4

3334-1/4

4143

47-1/46270

1818

18-3/419

19-1/221-1/424-1/228-3/429-3/4

3334-1/4

4143

47-1/262701818

18-3/419

19-1/221-1/424-1/228-3/429-3/4

3334-1/4

4143

47-1/462 70

5-7/165-7/165-7/165-7/166-5/166-7/87-3/88-7/89-3/810-1/8

1113-5/814-1/216-1/221-3/424-1/25-7/165-7/165-7/165-7/166-5/166-7/87-3/88-7/89-3/810-1/8

1113-5/814-1/216-1/221-3/424-1/2

1-1/81-1/81-1/41-1/41-1/41-5/161-7/161-7/161-5/81-5/81-5/8

1-13/161-13/161-15/16

2 2-13/161-3/81-3/81-1/21-1/21-9/161-9/161-13/161-13/161-15/161-15/161-15/162-1/42-1/42-7/162-11/162-15/16

4040455560751101401852202604304956201600280040404555607511514519022527044551064017002860

Size (in.) and Class

NOTE: Inlet and outlet combinations as well as orifices sizes shown in the table above are compliant with both API Standard 526, Third Edition, 1984 and FourthEdition, 1995, except those sizes marked * comply only with API 526, Fourth Edition, 1995. For replacement valves that do not comply with botheditions, contact the factory for verification of dimensions and inlet and outlet combinations. The V & W orifice valves are not an API approved orifice size.

C

A

S

B

D


1900 (SRV-1/Q2.02)1900.47



STD BellowsD

1 - 300 x 2 - 1501 - 300 x 2 - 150

1-1/2 - 300 x 2 - 1501-1/2 - 300 x 3 - 150*

2 - 300 x 3 - 1503 - 300 x 4 - 150*3 - 300 x 4 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1506 - 300 x 8 - 150

6 - 300 x 10 - 1508 - 300 x 10 - 150#10 - 300 x 14 - 150#12 - 300 x 16 -150#1 - 600 x 2 - 150#1 - 600 x 2 - 150#

1-1/2 - 600 x 2 - 150#1-1/2 - 600 x 3 - 150#*

2 - 600 x 3 - 150#3 - 600 x 4 - 150#*3 - 600 x 4 - 150#4 - 600 x 6 - 150 #4 - 600 x 6 - 150 #4 - 600 x 6 - 150 #4 - 600 x 6 - 150 #6 - 600 x 8 - 150#6 - 600 x 10 - 150#

1910D1910E1910F1910G1910H1910J1910K1910L1910M1910N1910P1910Q1910R1910T1910V1910W1912D1912E1912F1912G1912H1912J1912K1912L1912M1912N1912P1912Q1912R

4-1/84-1/84-7/84-7/85-1/87-1/46-1/87-1/16

77-3/48-7/89-7/169-7/1610-7/8

1214

4-1/84-1/84-7/84-7/86-1/167-1/47-1/47-1/16

77-3/48-7/89-7/169-7/16

4-1/24-1/2

66

4-7/87-1/86-3/87-1/87-1/48-1/4

109-1/210-1/2

111616

4-1/24-1/2

66

6-3/87-1/87-1/8

88

8-3/410

9-1/210-1/2

17-1/217-1/218-1/418-1/420-1/425-5/8

283232

34-1/441

43-1/445-1/253-3/8

6670

18-1/418-1/4

191923

29-7/829-1/4

3236-1/4

3943-1/2

4647-1/2

18-1/218-1/219-1/419-1/220-1/425-5/8

283232

34-1/441

43-1/445-1/253-3/8

6670

19-1/419-1/4

2020-1/4

2329-7/829-1/4

3236-1/4

3943-1/2

4647-1/2

5-7/165-7/165-7/165-7/166-5/167-3/87-3/49-1/29-3/810-1/211-1/2

1414-1/216-1/224-1/224v1/26-5/166-5/166-5/166-5/16

79

7-3/49-1/210-3/411-3/413-7/814-1/415-1/8

1-3/81-3/81-9/161-9/161-11/161-13/161-15/161-15/161-15/161-15/161-15/162-1/42-1/42-7/162-11/162-15/161-3/81-3/81-9/161-9/16

1-11/161-13/161-15/162-3/162-3/162-3/162-3/162-11/162-11/16

5050506065100140220230260350530550840200028605555606585170150230300360530645675

CSize (in.) and Class

NOTE: Inlet and outlet combinations as well as orifices sizes shown in the table above are compliant with both API Standard 526, Third Edition, 1984 and FourthEdition, 1995, except those sizes marked * comply only with API 526, Fourth Edition, 1995. For replacement valves that do not comply with both editions,contact the factory for verification of dimensions and inlet and outlet combinations. The V & W orifice valves are not an API approved orifice size.

Drain

C

A

S

B

D





STD BellowsD

1-1/2 - 900 x 2 - 3001-1/2 - 900 x 2 - 3001-1/2 - 900 x 3 - 300*1-1/2 - 900 x 3 - 300*

2 - 900 x 3 - 1503 - 900 x 4 - 1503 - 900 x 6 - 1504 - 900 x 6 - 1504 - 900 x 6 - 1504 - 900 x 6 - 1504 - 900 x 6 - 150

1-1/2 - 1500 x 2 - 3001-1/2 - 1500 x 2 - 3001-1/2 - 1500 x 3 - 300*

2 - 1500 x 3 - 3002 - 1500 x 3 - 3003 - 1500 x 4 - 3003 - 1500 x 6 - 3004 - 1500 x 6 - 150

1-1/2 - 2500 x 3 - 300*1-1/2 - 2500 x 3 - 300*1-1/2 - 2500 x 3 - 300*

2 - 2500 x 3 - 300

1914D1914E1914F1914G1914H1914J1914K1914L1914M1914N1914P1916D1916E1916F1916G1916H1916J1916K1916L1918D1918E1918F1918G

4-1/84-1/84-7/84-7/86-1/167-1/4

7-13/167-3/47-3/47-3/48-7/84-1/84-1/84-7/86-1/86-1/167-1/47-3/47-3/45-1/25-1/25-1/26-1/8

5-1/25-1/26-1/26-1/26-3/87-1/88-1/28-3/48-3/48-3/4

105-1/251/26-1/26-3/46-3/87-1/88-1/28-3/4

777

6-3/4

21-3/421-3/422-1/222-1/2

2629-3/435-1/437-1/4

3739

43-1/221-3/421-3/422-1/223-3/4

26 29-3/435-1/437-1/426-1/226-1/226-1/223-3/4

22-3/422-3/423-1/223-3/4

2629-3/435-1/437-1/4

3739

43-1/222-3/422-3/423-1/2

2526

29-3/435-1/437-1/427-1/227-1/227-1/2

25

7-13/167-13/167-13/167-13/168-1/4

910-1/212-1/410-3/411-3/413-7/8

7-13/167-13/167-13/167-13/168-1/4

910-1/212-1/48-7/88-7/88-7/8

7-13/16

1-15/161-15/161-15/161-15/162-3/162-3/162-3/162-7/162-7/162-7/162-7/161-15/161-15/161-15/162-3/162-3/162-9/162-9/162-13/162-7/162-7/162-7/162-11/16

9595100951301953003603403805459595100100140220320370150150150110

CSize (in.) and Class


Drain

C

A

S

B

D


1900 (SRV-1/Q2.02)1900.49


Approx.WeightSSize (in.) and Class Type A B

STD Bellows

CD

1 - 300 x 2 - 1501 - 300 x 2 - 150

1-1/2 - 300 x 2 - 1501-1/2 - 300 x 3 - 150*

2 - 300 x 3 - 1503 - 300 x 4 - 150*3 - 300 x 4 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1506 - 300 x 8 - 1506 - 300 x 8 - 1508 - 300 x 10 - 15010 - 300 x 14 - 15012 - 300 x 16 - 1501 - 600 x 2 - 1501 - 600 x 2 - 150

1-1/2 - 600 x 2 - 1501-1/2 - 600 x 3 - 150*

2 - 600 x 3 - 1503 - 600 x 4 - 150*3 - 600 x 4 - 1504 - 600 x 6 - 1504 - 600 x 6 - 1504 - 600 x 6 - 1506 - 600 x 8 - 1506 - 600 x 10 - 1504 - 600 x 6 - 150

1920D1920E1920F1920G1920H1920J1920K1920L1920M1920N1920P1920Q1920R1920T1920V1920W1922D1922E1922F1922G1922H1922J1922K1922L1922M1922N1922Q1922R1923P

4-1/84-1/84-7/84-7/85-1/87-1/46-1/87-1/16

77-3/48-7/89-7/169-7/1610-7/8

1214

4-1/84-1/84-7/84-7/85-1/87-1/46-1/87-1/16

77-3/49-7/169-7/168-7/8

4-1/24-1/2

66

4-7/87-1/86-3/87-1/87-1/48-1/4

109-1/29-1/2

111616

4-1/24-1/2

66

4-7/87-1/86-3/8

88

8-3/49-1/210-1/2

10

17-1/217-1/218-1/418-1/420-1/425-5/8

283232

34-1/4414143

53-3/86670

17-1/217-1/218-1/4

1920-1/425-5/8

2832

36-1/43946

47-1/243-1/2

18-1/218-1/219-1/419-1/220-1/425-5/8

283232

34-1/4414143

53-3/86670

18-1/218-1/219-1/420-1/420-1/425-5/8

2832

36-1/43946

47-1/243-1/2

5-7/165-7/165-7/165-7/166-5/167-3/87-3/49-1/29-3/810-1/211-1/213-5/814-1/216-1/224-1/224-1/25-7/165-7/165-7/166-5/166-5/167-3/87-3/49-1/210-3/411-3/414-1/415-1/813-7/8

1-3/81-3/81-9/161-9/161-11/161-13/161-15/161-15/161-15/161-15/161-15/162-1/42-1/42-7/162-11/162-15/161-3/81-3/81-9/161-9/161-11/161-13/161-15/162-3/162-3/162-3/162-11/162-11/162-3/16

5050506065100140220230260350445510840200028605050506565100140230300360645675530


Drain

C

A

S

B

D




Approx.Weight (lbs.)SSize (in.) and Class Type A B

STD Bellows

CD

1-1/2 - 900 x 2 - 3001-1/2 - 900 x 2 - 3001-1/2 - 900 x 3 - 300*1-1/2 - 900 x 3 - 300*

2 - 900 x 3 - 1503 - 900 x 4 - 150*3 - 900 x 6 - 150*4 - 900 x 6 - 1504 - 900 x 6 - 1504 - 900 x 6 - 1504 - 900 x 6 - 150

1-1/2 - 1500 x 2 - 3001-1/2 - 1500 x 2 - 3001-1/2 - 1500 x 3 - 300*

2 - 1500 x 3 - 3002 - 1500 x 3 - 3003 - 1500 x 4 - 3003 - 1500 x 6 - 3004 - 1500 x 6 - 150

1-1/2 - 2500 x 3 - 300*1-1/2 - 2500 x 3 - 300*1-1/2 - 2500 x 3 - 300*

2 - 2500 x 3 - 300


4-1/84-1/84-7/84-7/86-1/167-1/4

7-13/167-3/47-3/47-3/48-7/84-1/84-1/84-7/86-1/86-1/167-1/47-3/47-3/45-1/25-1/25-1/26-1/8

5-1/25-1/26-1/26-1/26-3/87-1/88-1/28-3/48-3/48-3/4

105-1/25-1/26-1/26-3/46-3/87-1/88-1/28-3/4

777

6-3/4

21-3/421-3/422-1/222-1/2

2329-7/835-1/437-1/4

3739

43-1/221-3/421-3/422-1/223-3/4

2629-3/435-1/437-1/426-1/226-1/226-1/223-3/4

22-3/422-3/423-1/223-3/4

2329-7/835-1/437-1/4

3739

43-1/222-3/422-3/423-1/2

2526

29-3/435-1/437-1/427-1/227-1/227-1/2

25

7-13/167-13/167-13/167-13/16

79

10-1/212-1/410-3/411-3/413-7/8

7-13/167-13/167-13/167-13/168-1/4

910-1/212-1/48-7/88-7/88-7/8

7-13/16

1-15/161-15/161-15/161-15/162-3/162-5/162-3/162-7/162-7/162-7/162-7/16

1-15/161-15/161-15/162-3/162-3/162-9/162-9/16

2-13/162-7/162-7/162-7/16

2-11/16

959510095901803003603403805459595100100140220320370150150150110


Drain

C

A

S

B

D


1900 (SRV-1/Q2.02)1900.51

1900 Series ValvesMetric Dimensions (mm) and Weights (Kg)

Approx.Weight (Kg)SSize (in.) and Class Type A B

STD Bellows

CD

1 - 150 x 2 - 1501 - 150 x 2 - 150

1-1/2 - 150 x 2 - 1501-1/2 - 150 x 3 - 1501-1/2 - 150 x 3 - 150

2 - 150 x 3 - 1503 - 150 x 4 - 1503 - 150 x 4 - 1504 - 150 x 6 - 1504 - 150 x 6 - 1504 - 150 x 6 - 1506 - 150 x 8 - 1506 - 150 x 8 - 1508 - 150 x 10 - 15010 - 150 x 14 - 15012 - 150 x 16 - 150

1 - 300 x 2 - 1501 - 300 x 2 - 150

1-1/2 - 300 x 2 - 1501-1/2 - 300 x 3 - 1501-1/2 - 300 x 3 - 150

2 - 300 x 3 - 1503 - 300 x 4 - 1503 - 300 x 4 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1504 - 300 x 6 -1506 - 300 x 8 - 1506 - 300 x 8 -150

8 - 300 x 10 - 15010 - 300 x 14 - 15012 -300 x 16 - 150

1905D1905E1905F1905G1905H1905J1905K1905L1905M1905N1905P1905Q1905R1905T1905V1905W1906D1906E1906F1906G1906H1906J1906K1906L1906M1906N1906P1906Q1906R1906T1906V1906W

104.8104.8123.8123.8130.2136.5155.6155.6177.8196.9181

239.7239.7276.2304.8355.6104.8104.8123.8123.8130.2136.5155.6155.6177.8196.9181

239.7239.7276.2304.8355.6

114.3114.3120.7120.7123.8123.8161.9165.1184.2209.6228.6241.3241.3279.4406.4406.4114.3114.3120.7120.7123.8123.8161.9165.1184.2209.6228.6241.3241.3279.4406.4406.4

431.8431.8450.9450.9495.3539.8622.3730.3755.7838.2870

1041.41092.21206.51574.81778431.8431.8450.9450.9495.3539.8622.3730.3755.7938.2870

1041.41092.21200.21574.81778

457.2457.2476.3482.6495.3539.8622.3730.3755.7838.2870

1041.41092.21206.51574.81778457.2457.2476.3482.6495.3539.8622.3730.3755.7838.2870

1041.41092.21200.21574.81778

138.1138.1138.1138.1160.3174.6187.3225.4238.1257.2279.4346.1368.3419.1552.5622.3138.1138.1138.1138.1160.3174.6187.3225.4238.1257.2279.4346.1368.3419.1552.5622.3

28.628.631.831.831.833.336.536.541.341.341.34646

49.250.855.634.934.938.138.139.739.74646

49.249.249.257.257.261.968.374.6

18.118.120.424.927.234

49.963.583.999.8117.9195

224.5281.2725.81270.118.118.120.424.927.234

52.265.886.2102.1122.5201.9231.3290.3770.11300


Drain

C

A

S

B

D





STD Bellows

CD

1 - 300 x 2 - 1501 - 300 x 2 - 150

1-1/2 - 300 x 2 - 1501-1/2 - 300 x 3 - 150

2 - 300 x 3 - 1503 - 300 x 4 - 1503 - 300 x 4 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1506 - 300 x 8 - 1506 - 300 x 10 - 1508 - 300 x 10 - 15010 - 300 x 14 - 15012 - 300 x 16 -1501 - 600 x 2 - 1501 - 600 x 2 - 150

1-1/2 - 600 x 2 - 1501-1/2 - 600 x 3 - 150

2 - 600 x 3 - 1503 - 600 x 4 - 1503 - 600 x 4 - 1504 - 600 x 6 - 1504 - 600 x 6 - 1504 - 600 x 6 - 1504 - 600 x 6 - 1506 - 600 x 8 - 1506 - 600 x 10 - 150

1910D1910E1910F1910G1910H1910J1910K1910L1910M1910N1910P1910Q1910R1910T1910V1910W1912D1912E1912F1912G1912H1912J1912K1912L1912M1912N1912P1912Q1912R

104.8104.8123.8123.8130.2184.2155.6179.4177.8196.9225.4239.7239.7276.2304.8355.6104.8104.8123.8123.8154

184.2184.2179.4177.8196.9225.4239.7239.7

114.3114.3152.4152.4123.8181

161.9181

184.2209.6254

241.3266.7279.4406.4406.4114.3114.3152.4152.4161.9181181

203.2203.2222.3254

241.3266.7

444.5444.5463.6463.6514.4651

711.2812.8812.8870

1041.41098.61155.71355.71676.41778463.6463.6482.6482.6584.2759743

812.8920.8990.61104.91168.41206.5

469.9469.9489

495.3514.4651

711.2812.8812.8870

1041.41098.61155.71355.71676.41778489489508

514.4584.2759743

812.8920.8990.61104.91168.41206.5

138.1138.1138.1138.1160.3187.3196.9241.3238.1266.7292.1355.6368.3419.1622.3622.3160.3160.3160.3160.3177.8228.6196.9241.3273.1298.5352.4362

384.2

34.934.939.739.742.846

49.249.249.249.249.257.257.261.968.374.634.934.939.739.742.846

49.255.555.555.555.568.368.3

22.722.722.727.229.545.463.599.8104.3117.9158.8240.4249.5381

907.213002525

27.229.538.677.168

104.3136.1163.3240.4292.6306.5


Drain

C

A

S

B

D


1900 (SRV-1/Q2.02)1900.53


STD Bellows

CD

1-1/2 - 900 x 2 - 3001-1/2 - 900 x 2 - 3001-1/2 - 900 x 3 - 300*1-1/2 - 900 x 3 - 300*

2 - 900 x 3 - 1503 - 900 x 4 - 1503 - 900 x 6 - 1504 - 900 x 6 - 1504 - 900 x 6 - 1504 - 900 x 6 - 1504 - 900 x 6 - 150

1-1/2 - 1500 x 2 - 3001-1/2 - 1500 x 2 - 3001-1/2 - 1500 x 3 - 300*

2 - 1500 x 3 - 3002 - 1500 x 3 - 3003 - 1500 x 4 - 3003 - 1500 x 6 - 3004 - 1500 x 6 - 150

1-1/2 - 2500 x 3 - 300*1-1/2 - 2500 x 3 - 300*1-1/2 - 2500 x 3 - 300*

2 - 2500 x 3 - 300


104.8104.8123.8123.8154

184.2198.4196.9196.9196.9225.4104.8104.8123.8155.6154

184.2196.9196.9139.7139.7139.7155.6

139.7139.7165.1165.1161.9181

215.9222.3222.3222.3254

139.7139.7165.1171.5161.9181

215.9222.3177.8177.8177.8171.5

552.5552.5571.5571.5660.4755.7895.4946.2939.8990.61104.9552.5552.5571.5603.3660.4755.7895.4946.2673.1673.1673.1603.3

577.9577.9596.9603.3660.4755.7895.4946.2939.8990.61104.9577.9577.9596.9635.5660.4755.7895.4946.2698.5698.5698.5635

198.4198.4198.4198.4209.6228.6266.7311.2273.1298.5352.4198.4198.4198.4198.4209.6228.6266.7311.2225.4225.4225.4198.4

49.249.249.249.255.555.555.561.961.961.961.949.249.249.255.555.565.165.171.461.961.961.968.2

43.143.145.443.159

88.5136.1163.3154.2172.4247.243.143.145.445.463.599.8145.2167.8

686868

49.9



Drain

C

A

S

B

D




STD Bellows

CD


1 - 300 x 2 - 1501 - 300 x 2 - 150

1-1/2 - 300 x 2 - 1501-1/2 - 300 x 3 - 150*

2 - 300 x 3 - 1503 - 300 x 4 - 150*3 - 300 x 4 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1504 - 300 x 6 - 1506 - 300 x 8 - 1506 - 300 x 8 - 1508 - 300 x 10 - 15010 - 300 x 14 - 15012 - 300 x 16 - 1501 - 600 x 2 - 1501 - 600 x 2 - 150

1-1/2 - 600 x 2 - 1501-1/2 - 600 x 3 - 150*

2 - 600 x 3 - 1503 - 600 x 4 - 150*3 - 600 x 4 - 1504 - 600 x 6 - 1504 - 600 x 6 - 1504 - 600 x 6 - 1506 - 600 x 8 - 1506 - 600 x 10 - 1504 - 600 x 6 - 150

1920D1920E1920F1920G1920H1920J1920K1920L1920M1920N1920P1920Q1920R1920T1920V1920W1922D1922E1922F1922G1922H1922J1922K1922L1922M1922N1922Q1922R1923P

104.8104.8123.8123.8130.2184.2155.6179.4177.8196.9225.4239.7239.7276.2304.8355.6104.8104.8123.8123.8130.2184.2155.6179.4177.8196.9239.7239.7225.4

114.3114.3152.4152.4123.8181

161.9181

184.2209.6254

241.3241.3279.4406.4406.4114.3114.3152.4152.4123.8181

161.9203.2203.2222.3241.3266.7254

444.5444.5463.6463.6514.4651

711.2812.8812.8870

1041.41041.41092.21355.71676.41778444.5444.5463.6482.6514.4651

711.2812.8920.8990.61168.41206.51104.9

469.9469.9489

495.3514.4651

711.2812.8812.8870

1041.41041.41092.21355.71676.41778469.9469.9489

514.4514.4651

711.2812.8920.8990.61168.41206.51104.9

138.1138.1138.1138.1160.3187.3196.9241.3238.1266.7292.1346.1368.3419.1622.3622.3138.1138.1138.1160.3160.3187.3196.9241.3273.1298.5362

384.2352.4

34.934.939.739.742.846

49.249.249.249.249.257.257.261.968.374.634.934.939.739.742.846

49.255.555.555.568.368.355.5

22.722.722.727.229.545.463.599.8104.3117.9158.8201.9231.3381

907.2130022.722.722.729.529.545.463.5104.3136.1163.3292.6306.2240.4


Drain

C

A

S

B

D


1900 (SRV-1/Q2.02)1900.55



STD Bellows

CD

1-1/2 - 900 x 2 - 3001-1/2 - 900 x 2 - 3001-1/2 - 900 x 3 - 300*1-1/2 - 900 x 3 - 300*

2 - 900 x 3 - 1503 - 900 x 4 - 150*3 - 900 x 4 - 150*4 - 900 x 6 - 1504 - 900 x 6 - 1504 - 900 x 6 - 1504 - 900 x 6 - 150

1-1/2 - 1500 x 2 - 3001-1/2 - 1500 x 2 - 3001-1/2 - 1500 x 3 - 300*

2 - 1500 x 3 - 3002 - 1500 x 3 - 3003 - 1500 x 4 - 3003 - 1500 x 6 - 3004 - 1500 x 6 - 150

1-1/2 - 2500 x 3 - 300*1-1/2 - 2500 x 3 - 300*1-1/2 - 2500 x 3 - 300*

2 - 2500 x 3 - 300#


104.8104.8123.8123.8154

184.2198.4196.9196.9196.9225.4104.8104.8123.8155.6154

184.2196.9196.9139.7139.7139.7155.6

139.7139.7165.1165.1161.9181

215.9222.3222.3222.3254

139.7139.7165.1171.5161.9181

215.9222.3177.8177.8177.8171.5

552.5552.5571.5571.5584.2759

895.4946.2939.8990.61104.9552.5552.5571.5603.3660.4755.7895.4946.2673.1673.1673.1603.3

577.9577.9596.9603.3584.2759

895.4946.2939.8990.61104.9577.9577.9596.9635

660.4755.7895.4946.2698.5698.5698.5635

198.4198.4198.4198.4177.8228.6266.7311.2273.1298.5352.4198.4198.4198.4198.4209.6228.6266.7311.2225.4225.4225.4198.4

49.249.249.249.255.558.755.561.961.961.961.949.249.249.255.555.565.165.171.461.961.961.968.2

43.143.145.443.140.881.6136.1163.3154.2172.4247.243.143.145.445.463.599.8145.2167.8

686868

49.9


C

A

S

B

D

Drain

1900Pressure / Temperature


Minimum Set PressuresThe minimum set pressures of the 1900 flanged valves

are in accordance with the following table.

Pressure / Temperature Tables

How To Use Rating TablesThe included tables specify important data about the valve including valvesizes, flange ratings, pressure and temperature limits, back pressureratings, and materials with allowable temperature ranges.After determining valve size from the Valve Sizing section, or capacitytables in this section, select the proper set of tables and graphs (in thefollowing pages) for the size valve. Enter the pressure/temperaturegraphs and determine valve type. Review the table of data for that sizevalve to get other pertinent information.

NOTES: 1 The pressure/temperature limitations shown in the following tables arebased on the limits specified in API526 applicable to the 1900 seriessupplied in standard materials of construction. For pressure/temperaturelimitations of valves made from special materials, consult the factory or theSRVS sizing program. (Note that 1900-30 bellows design valve suppliedwith the standard Inconel 625 bellows is limited to a temperature range of400°F to 1500°F.)

2 ASME Class 300 outlet flanges are permitted for mating purposes only onvalves that are normally supplied with standard ASME Class 150 pressurerating. For back pressure applications exceeding the ASME Class 150pressure rating use SRVS sizing program or contact the factory for assistance.

3 When soft seats are used, they may govern the valve pressure/temperature rating.

Procedure

Enter the graph on page 1900.68 for the “J” size, select set pressure onthe bottom scale at 500 psig, follow this line vertically upward until itintersects the 100°F (38°C) line. The selection is a 1910Jc valve.

ResultsReferring to the table on page 1900.67, the valve is 3" - 300 x 4" - 150with a carbon steel body and spring. The back pressure limit issatisfactory for 50 psig back pressure.

SpringsWithin given temperature limits, alloy steel springs are specified.Because of material availability from vendors, most springs are of alloysteel construction which provides superior strength and corrosionresistant properties.

MaterialsThe operating temperature should be used to select the materials invalves for fire sizing applications.

Low Set Pressure Limit2

Orifice

DEFGHJKLMNPQRTVW

55544556697779157

15151515151010101010101010101515

Valve Set PressureBack PressureTemperature

Valve

500 psig50 psig100°F

“J”

Example

Conventional Valve(psig)

Bellows Valve1

(psig)

NOTES: 1 The bonnet must be vented when a bellows is used.2 Valves with set pressure less than 15 psig cannot be stamped with the ASME stamp.


1900 (SRV-1/Q2.02)1900.57

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

-450

-151

-150 -76

-75

-21

-20

+100

+450

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Inlet

Tem

p.Ra

nge

(°F)

Valv

e Si

zeIn

let x

Out

let

1905

Dc19

06Dc

1910

Dc19

12Dc

1914

Dc19

16Dc

1918

Dc19

05Dt

1906

Dt19

10Dt

1912

Dt19

14Dt

1916

Dt19

18Dt

1920

Dt19

22Dt

1924

Dt19

26Dt

1928

Dt19

05D/

L119

06D/

L119

10D/

L119

12D/

L119

14D/

L119

16D/

L119

18D/

L119

05D/

L219

06D/

L219

10D/

L219

12D/

L219

14D/

L219

16D/

L219

18D/

L219

05D/

L319

06D/

L319

10D/

L319

12D/

L319

14D/

L319

16D/

L319

18D/

L3

— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — 275

275

720

1440

2160

3600

4000

— — — — — — — — — — — — — — — — — — — 275

275

720

1440

2160

3600

6000 — — — — — — — — — — — — — —

185

285

615

1235

1845

3080

5135

185

285

615

1235

1845

3080

5135 — — — — — — — — — — — — — — — — — — — — — — — — — —

+800

+100

0St

anda

rdBe

llow

s

— — — — — — — — — — — — — — 225

445

670

1115

1860 — — — — — — — — — — — — — — — — — — — — —

ASM

E Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig) &

Tem

pera

ture

Lim

its -

°F

1 x 2

1 x 2

1 x 2

1 x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1 x 2

1 x 2

1 x 2

1 x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1 x 2

1 x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1 x 2

1 x 2

1 x 2

1 x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1 x 2

1 x 2

1 x 2

1 x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1 x 2

1 x 2

1 x 2

1 x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

150

300

300

600

900

1500

2500

150

300

300

600

900

1500

2500

300

600

900

1500

2500

150

300

300

600

900

1500

2500

150

300

300

600

900

1500

2500

150

300

300

600

900

1500

2500

1905

-30Dc

1906

-30Dc

1910

-30Dc

1912

-30Dc

1914

-30Dc

1916

-30Dc

1918

-30Dc

1905

-30Dt

1906

-30Dt

1910

-30Dt

1912

-30Dt

1914

-30Dt

1916

-30Dt

1918

-30Dt

1920

-30Dt

1922

-30Dt

1924

-30Dt

1926

-30Dt

1928

-30Dt

1905

-30D/

L119

06-30

D/L1

1910

-30D/

L119

12-30

D/L1

1914

-30D/

L119

16-30

D/L1

1918

-30D/

L119

05-30

D/L2

1906

-30D/

L219

10-30

D/L2

1912

-30D/

L219

14-30

D/L2

1916

-30D/

L219

18-30

D/L2

1905

-30D/

L319

06-30

D/L3

1910

-30D/

L319

12-30

D/L3

1914

-30D/

L319

16-30

D/L3

1918

-30D/

L3

150

150

150

150

300

300

300

150

150

150

150

300

300

300

150

150

300

300

300

150

150

150

150

300

300

300

150

150

150

150

300

300

300

150

150

150

150

300

300

300

— — — — — — — — — — — — — — — — — — — — — — — — — — 275

275

720

1440

2160

3600

4000 — — — — — — —

285

285

740

1480

2220

3705

6000 — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —

— — — — — — — 80 285

410

825

1235

2060

3430

510

1015

1525

2540

4230 — — — — — — — — — — — — — — — — — — — — —

230

230

230

230

500

500

500

230

230

230

230

500

500

500

230

230

500

500

500

230

230

230

230

500

500

500

230

230

230

230

500

500

500

230

230

230

230

500

500

500

285

285

285

285

600

600

740

285

285

285

285

600

600

740

285

285

600

600

740

275

275

275

275

600

600

720

275

275

275

275

600

600

720

275

275

275

275

600

600

720

-20 to 450

451 to 800

801 to 1000 -21 to -75 -76 to -150

-151 to -450

D

Selection Table for Vapors, Gases and Liquids1900 & 1900-30 Series, D Orifice - API area: 0.110 Sq. in.



SET

PRES

SURE

- lb

s./S

q. in

.

Stainl

ess

Sprin

g

Alloy Steel

Sprin

gs

Tung

sten

or In

cone

lSte

el Sp

rings

-450

-400

-300

-200

-1000

100

200

300

400

500

600

700

800

900

1,00

0

020

040

060

080

010

0012

0014

0016

0018

0020

0030

0040

0050

0060

00

Selection Chart for Vapors, Gases and Liquids1900 & 1900-30 Series, D Orifice - API area: 0.110 Sq. in.

D

1920

Dt

1906

Dt

1922

Dt19

24Dt

1926

Dt19

28Dt

1905

D/L1

1906

D/L1

1905

D/L2

1906

D/L2

1905

D/L3

1906

D/L3

1910

D/L1

1912

D/L1

1914

D/L1

1918

D/L1

1916

D/L1

1910

D/L2

1912

D/L2

1914

D/L2

1918

D/L2

1916

D/L2

1916

D/L3

1910

Dt19

12Dt

1916

Dt19

14Dt

1918

Dt

1905

Dt

1906

Dc

1905

Dc19

10Dc

1912

Dc19

14Dc

1916

Dc19

18Dc

1910

D/L3

1912

D/L3

1914

D/L3

1918

D/L3

INLET TEMPERATURE °F


1900 (SRV-1/Q2.02)1900.59

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, E Orifice - API Area: 0.196 Sq. in.

E

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

-450

-151

-150 -76

-75

-21

-20

+100

+450

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Inlet

Tem

p.Ra

nge

(°F)

Valv

e Si

zeIn

let x

Out

let

1905

Ec19

06Ec

1910

Ec19

12Ec

1914

Ec19

16Ec

1918

Ec19

05Et

1906

Et19

10Et

1912

Et19

14Et

1916

Et19

18Et

1920

Et19

22Et

1924

Et19

26Et

1928

Et19

05E/

L119

06E/

L119

10E/

L119

12E/

L119

14E/

L119

16E/

L119

18E/

L119

05E/

L219

06E/

L219

10E/

L219

12E/

L219

14E/

L219

16E/

L219

18E/

L219

05E/

L319

06E/

L319

10E/

L319

12E/

L319

14E/

L319

16E/

L319

18E/

L3

— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — 275

275

720

1440

2160

3600

4000

— — — — — — — — — — — — — — — — — — — 275

275

720

1440

2160

3600

6000 — — — — — — — — — — — — — —

185

285

615

1235

1845

3080

5135

185

285

615

1235

1845

3080

5135 — — — — — — — — — — — — — — — — — — — — — — — — — —

+800

+100

0St

anda

rdBe

llow

s

— — — — — — — — — — — — — — 225

445

670

1115

1860 — — — — — — — — — — — — — — — — — — — — —

ASM

E Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig) &

Tem

pera

ture

Lim

its -

°F

1 x 2

1 x 2

1 x 2

1 x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1 x 2

1 x 2

1 x 2

1 x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1 x 2

1 x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1 x 2

1 x 2

1 x 2

1 x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1 x 2

1 x 2

1 x 2

1 x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1 x 2

1 x 2

1 x 2

1 x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

150

300

300

600

900

1500

2500

150

300

300

600

900

1500

2500

300

600

900

1500

2500

150

300

300

600

900

1500

2500

150

300

300

600

900

1500

2500

150

300

300

600

900

1500

2500

1905

-30Ec

1906

-30Ec

1910

-30Ec

1912

-30Ec

1914

-30Ec

1916

-30Ec

1918

-30Ec

1905

-30Et

1906

-30Et

1910

-30Et

1912

-30Et

1914

-30Et

1916

-30Et

1918

-30Et

1920

-30Et

1922

-30Et

1924

-30Et

1926

-30Et

1928

-30Et

1905

-30E/

L119

06-30

E/L1

1910

-30E/

L119

12-30

E/L1

1914

-30E/

L119

16-30

E/L1

1918

-30E/

L119

05-30

E/L2

1906

-30E/

L219

10-30

E/L2

1912

-30E/

L219

14-30

E/L2

1916

-30E/

L219

18-30

E/L2

1905

-30E/

L319

06-30

E/L3

1910

-30E/

L319

12-30

E/L3

1914

-30E/

L319

16-30

E/L3

1918

-30E/

L3

150

150

150

150

300

300

300

150

150

150

150

300

300

300

150

150

300

300

300

150

150

150

150

300

300

300

150

150

150

150

300

300

300

150

150

150

150

300

300

300

— — — — — — — — — — — — — — — — — — — — — — — — — — 275

275

720

1440

2160

3600

4000 — — — — — — —

285

285

740

1480

2220

3705

6000 — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —

— — — — — — — 80 285

410

825

1235

2060

3430

510

1015

1525

2540

4230 — — — — — — — — — — — — — — — — — — — — —

230

230

230

230

500

500

500

230

230

230

230

500

500

500

230

230

500

500

500

230

230

230

230

500

500

500

230

230

230

230

500

500

500

230

230

230

230

500

500

500

285

285

285

285

600

600

740

285

285

285

285

600

600

740

285

285

600

600

740

275

275

275

275

600

600

720

275

275

275

275

600

600

720

275

275

275

275

600

600

720

-20 to 450

451 to 800

801 to 1000 -21 to -75 -76 to -150

-151 to -450



Stainl

ess

Sprin

g

Tung

sten

or In

cone

lSte

el Sp

rings

-450

-400

-300

-200

-1000

100

200

300

400

500

600

700

800

900

1,00

0

020

040

060

080

010

0012

0014

0016

0018

0020

0030

0040

0050

0060

00

Selection Chart for Vapors, Gases and Liquids1900 and 1900-30 Series, E Orifice - API Area: 0.196 Sq. in.

E

Alloy Steel

Sprin

gs

1922

Et19

24Et

1926

Et19

28Et

1906

Et

1905

Et

1910

Et19

12Et

1914

Et19

16Et

1918

Et

1906

Ec

1905

Ec19

10Ec

1912

Ec19

14Ec

1916

Ec19

18Ec

1910

E/L2

1912

E/L1

1912

E/L2

1914

E/L1

1914

E/L2

1918

E/L1

1918

E/L2

1916

E/L1

1916

E/L2

1916

E/L3

1905

E/L2

1906

E/L2

1905

E/L3

1906

E/L3

1910

E/L3

1912

E/L3

1918

E/L3

1914

E/L3

1920

Et

1905

E/L1

1906

E/L1

1910

E/L1

SET

PRES

SURE

- lb

s./S

q. in

.



1900 (SRV-1/Q2.02)1900.61

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, F Orifice - API Area: 0.307 Sq. in.

F

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

-450

-151

-150 -76

-75

-21

-20

+100

+450

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Inlet

Tem

p.Ra

nge

(°F)

Valv

e Si

zeIn

let x

Out

let

1905

Ec19

06Fc

1910

Fc19

12Fc

1914

Fc19

16Fc

1918

Fc19

05Ft

1906

Ft19

10Ft

1912

Ft19

14Ft

1916

Ft19

18Ft

1920

Ft19

22Ft

1924

Ft19

26Ft

1928

Ft19

05F/

L119

06F/

L119

10F/

L119

12F/

L119

14F/

L119

16F/

L119

18F/

L119

05F/

L219

06F/

L219

10F/

L219

12F/

L219

14F/

L219

16F/

L219

18F/

L219

05F/

L319

06F/

L319

10F/

L319

12F/

L319

14F/

L319

16F/

L319

18F/

L3

— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — 275

275

720

1440

2160

2200

3400

— — — — — — — — — — — — — — — — — — — 275

275

720

1440

2160

3600

5000 — — — — — — — — — — — — — —

185

285

615

1235

1845

3080

5000

185

285

615

1235

1845

3080

5135 — — — — — — — — — — — — — — — — — — — — — — — — — —

+800

+100

0St

anda

rdBe

llow

s

— — — — — — — — — — — — — — 225

445

670

1115

1860 — — — — — — — — — — — — — — — — — — — — —

ASM

E Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig) &

Tem

pera

ture

Lim

its -

°F

1-1/2

x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 2

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

150

300

300

600

900

1500

2500

150

300

300

600

900

1500

2500

300

600

900

1500

2500

150

300

300

600

900

1500

2500

150

300

300

600

900

1500

2500

150

300

300

600

900

1500

2500

1905

-30Fc

1906

-30Fc

1910

-30Fc

1912

-30Fc

1914

-30Fc

1916

-30Fc

1918

-30Fc

1905

-30Ft

1906

-30Ft

1910

-30Ft

1912

-30Ft

1914

-30Ft

1916

-30Ft

1918

-30Ft

1920

-30Ft

1922

-30Ft

1924

-30Ft

1926

-30Ft

1928

-3Ft

1905

-30F/

L119

06-30

F/L1

1910

-30F/

L119

12-30

F/L1

1914

-30F/

L119

16-30

F/L1

1918

-30F/

L119

05-30

F/L2

1906

-30F/

L219

10-30

F/L2

1912

-30F/

L219

14-30

F/L2

1916

-30F/

L219

18-30

F/L2

1905

-30F/

L319

06-30

F/L3

1910

-30F/

L319

12-30

F/L3

1914

-30F/

L319

16-30

F/L3

1918

-30F/

L3

150

150

150

150

300

300

300

150

150

150

150

300

300

300

150

150

300

300

300

150

150

150

150

300

300

300

150

150

150

150

300

300

300

150

150

150

150

300

300

300

— — — — — — — — — — — — — — — — — — — — — — — — — — 275

275

720

1440

2160

2200

3400 — — — — — — —

285

285

740

1480

2220

3705

5000 — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —

— — — — — — — 80 285

410

825

1235

2060

3430

510

1015

1525

2540

4230 — — — — — — — — — — — — — — — — — — — — —

230

230

230

230

500

500

500

230

230

230

230

500

500

500

230

230

500

500

500

230

230

230

230

500

500

500

230

230

230

230

500

500

500

230

230

230

230

500

500

500

285

285

285

285

740

740

740

285

285

285

285

740

740

740

285

285

740

740

740

275

275

275

275

720

720

720

275

275

275

275

720

720

720

275

275

275

275

720

720

720

-20 to 450

451 to 800

801 to 1000 -21 to -75 -76 to -150

-151 to -450



Stainl

ess

Sprin

g

Tung

sten

or In

cone

lSte

el Sp

rings

-450

-400

-300

-200

-1000

100

200

300

400

500

600

700

800

900

1,00

0

Selection Chart for Vapors, Gases and Liquids1900 and 1900-30 Series, F Orifice - API Area: 0.307 Sq. in. (198 Sq. mm

020

040

060

080

010

0012

0014

0016

0018

0020

0030

0040

0050

0060

00

F

Alloy Steel

Sprin

gs

1920

Ft19

22Ft

1924

Ft19

26Ft

1928

Ft

1906

Ft

1905

Ft

1910

Ft19

12Ft

1914

Ft19

16Ft

1918

Ft

1906

Fc

1905

Fc19

10Fc

1912

Fc19

14Fc

1916

Fc19

18Fc

1905

F/L1

1906

F/L1

1905

F/L2

1906

F/L2

1905

F/L3

1906

F/L3

1910

F/L1

1910

F/L2

1910

F/L3

1912

F/L3

1914

F/L3

1912

F/L1

1912

F/L2

1914

F/L1

1914

F/L2

1918

F/L2

1916

F/L1

1916

F/L2

1916

F/L3

1918

F/L3

1918

F/L1

SET

PRES

SURE

- lb

s./S

q. in

.



1900 (SRV-1/Q2.02)1900.63

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, G Orifice - API Area: 0.503 Sq. in.

G

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

-450

-151

-150 -76

-75

-21

-20

+100

+450

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Inlet

Tem

p.Ra

nge

(°F)

Valv

e Si

zeIn

let x

Out

let

1905

Gc19

06Gc

1910

Gc19

12Gc

1914

Gc19

16Gc

1918

Gc19

05Gt

1906

Gt19

10Gt

1912

Gt19

14Gt

1916

Gt19

18Gt

1920

Gt19

22Gt

1924

Gt19

26Gt

1928

Gt19

05G/

L119

06G/

L119

10G/

L119

12G/

L119

14G/

L119

16G/

L119

18G/

L119

05G/

L219

06G/

L219

10G/

L219

12G/

L219

14G/

L219

16G/

L219

18G/

L219

05G/

L319

06G/

L319

10G/

L319

12G/

L319

14G/

L319

16G/

L319

18G/

L3

— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — 275

275

720

1440

1600

2450

2600

— — — — — — — — — — — — — — — — — — — 275

275

720

1440

2160

3600

3600 — — — — — — — — — — — — — —

185

285

615

1235

1845

3080

3705

185

285

615

1235

1845

3080

3705 — — — — — — — — — — — — — — — — — — — — — — — — — —

+800

+100

0St

anda

rdBe

llow

s

— — — — — — — — — — — — — — 225

445

670

1115

1860 — — — — — — — — — — — — — — — — — — — — —

ASM

E Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig) &

Tem

pera

ture

Lim

its -

°F

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

2 x 3

2 x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

2 x 3

2 x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

2 x 3

2 x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

2 x 3

2 x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

2 x 3

2 x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

1-1/2

x 3

2 x 3

2 x 3

150

300

300

600

900

1500

2500

150

300

300

600

900

1500

2500

300

600

900

1500

2500

150

300

300

600

900

1500

2500

150

300

300

600

900

1500

2500

150

300

300

600

900

1500

2500

1905

-30Gc

1906

-30Gc

1910

-30Gc

1912

-30Gc

1914

-30Gc

1916

-30Gc

1918

-30Gc

1905

-30Gt

1906

-30Gt

1910

-30Gt

1912

-30Gt

1914

-30Gt

1916

-30Gt

1918

-30Gt

1920

-30Gt

1922

-30Gt

1924

-30Gt

1926

-30Gt

1928

-30Gt

1905

-30G/

L119

06-30

G/L1

1910

-30G/

L119

12-30

G/L1

1914

-30G/

L119

16-30

G/L1

1918

-30G/

L119

05-30

G/L2

1906

-30G/

L219

10-30

G/L2

1912

-30G/

L219

14-30

G/L2

1916

-30G/

L219

18-30

G/L2

1905

-30G/

L319

06-30

G/L3

1910

-30G/

L319

12-30

G/L3

1914

-30G/

L319

16-30

G/L3

1918

-30G/

L3

150

150

150

150

300

300

300

150

150

150

150

300

300

300

150

150

300

300

300

150

150

150

150

300

300

300

150

150

150

150

300

300

300

150

150

150

150

300

300

300

— — — — — — — — — — — — — — — — — — — — — — — — — — 275

275

720

1440

1600

2450

2600 — — — — — — —

285

285

740

1480

2220

3705

3705 — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —

— — — — — — — 80 285

410

825

1235

2060

3430

510

1015

1525

2540

3705 — — — — — — — — — — — — — — — — — — — — —

230

230

230

230

470

470

470

230

230

230

230

470

470

470

230

230

470

470

470

230

230

230

230

470

470

470

230

230

230

230

470

470

470

230

230

230

230

470

470

470

285

285

285

285

740

740

740

285

285

285

285

740

740

740

285

285

740

740

740

275

275

275

275

720

720

720

275

275

275

275

720

720

720

275

275

275

275

720

720

720

-20 to 450

451 to 800

801 to 1000 -21 to -75 -76 to -150

-151 to -450



Stainl

ess

Sprin

g

Tung

sten

or In

cone

lSte

el Sp

rings

-450

-400

-300

-200

-1000

100

200

300

400

500

600

700

800

900

1,00

0

020

040

060

080

010

0012

0014

0016

0018

0020

0030

0040

0050

0060

00

Selection Chart for Vapors, Gases and Liquids1900 and 1900-30 Series, G Orifice - API Area: 0.503 Sq. in.

G

Alloy Steel

Sprin

gs

1920

Gt19

22Gt

1924

Gt19

26Gt

1928

Gt

1905

G/L2

1906

G/L2

1905

G/L3

1906

G/L3

1910

G/L2

1912

G/L1

1914

G/L1

1916

G/L1

1918

G/L1

1912

G/L2

1905

Gt

1906

Gt

1910

Gt19

12Gt

1914

Gt19

16Gt

1918

Gt

1910

Gc19

12Gc

1914

Gc19

16Gc

1906

Gc19

18Gc

1916

G/L2

1910

G/L3

1912

G/L3

1916

G/L3

1918

G/L3

1905

G/L1

1906

G/L1

1905

Gc

1910

G/L1

1914

G/L3

1914

G/L2

SET

PRES

SURE

- lb

s./S

q. in

.


1918

G/L2


1900 (SRV-1/Q2.02)1900.65

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, H Orifice - API Area: 0.785 Sq. in.

H

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

-450

-151

-150 -76

-75

-21

-20

+100

+450

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Inlet

Tem

p.Ra

nge

(°F)

Valv

e Si

zeIn

let x

Out

let

1905

Hc19

06Hc

1910

Hc19

12Hc

1914

Hc19

16Hc

1905

Ht19

06Ht

1910

Ht19

12Ht

1914

Ht19

16Ht

1920

Ht19

22Ht

1924

Ht19

26Ht

1905

H/L1

1906

H/L1

1910

H/L1

1912

H/L1

1914

H/L1

1916

H/L1

1905

H/L2

1906

H/L2

1910

H/L2

1912

H/L2

1914

H/L2

1916

H/L2

1905

H/L3

1906

H/L3

1910

H/L3

1912

H/L3

1914

H/L3

1916

H/L3

+800

+100

0St

anda

rdBe

llow

s

ASM

E Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig) &

Tem

pera

ture

Lim

its -

°F

1-1/2

x 3

1-1/2

x 3

2 x 3

2 x 3

2 x 3

2 x 3

1-1/2

x 3

1-1/2

x 3

2 x 3

2 x 3

2 x 3

2 x 3

2 x 3

2 x 3

2 x 3

2 x 3

1-1/2

x 3

1-1/2

x 3

2 x 3

2 x 3

2 x 3

2 x 3

1-1/2

x 3

1-1/2

x 3

2 x 3

2 x 3

2 x 3

2 x 3

1-1/2

x 3

1-1/2

x 3

2 x 3

2 x 3

2 x 3

2 x 3

150

300

300

600

900

1500

150

300

300

600

900

1500

300

600

900

1500

150

300

300

600

900

1500

150

300

300

600

900

1500

150

300

300

600

900

1500

1905

-30Hc

19

06-30

Hc19

10-30

Hc19

12-30

Hc19

14-30

Hc19

16-30

Hc19

05-30

Ht19

06-30

Ht19

10-30

Ht19

12-30

Ht19

14-30

Ht19

16-30

Ht19

20-30

Ht19

22-30

Ht19

24-30

Ht19

26-30

Ht19

05-30

H/L1

1906

-30H/

L119

10-30

H/L1

1912

-30H/

L119

14-30

H/L1

1916

-30H/

L119

05-30

H/L2

1906

-30H/

L219

10-30

H/L2

1912

-30H/

L219

14-30

H/L2

1916

-30H/

L219

05-30

H/L3

1906

-30H/

L319

10-30

H/L3

1912

-30H/

L319

14-30

H/L3

1916

-30H/

L3

150

150

150

150

150

300

150

150

150

150

150

300

150

150

150

300

150

150

150

150

150

300

150

150

150

150

150

300

150

150

150

150

150

300

— — — — — — — — — — — — — — — — — — — — — — 275

275

720

1440

1485

1600 — — — — — —

285

285

740

1480

2220

2750 — — — — — — — — — — — — — — — — — — — — — — — — — — — —

— — — — — — 80 285

410

825

1235

2060

510

1015

1225

2040 — — — — — — — — — — — — — — — — — —

285

285

285

285

285

740

285

285

285

285

285

740

285

285

285

740

275

275

275

275

275

720

275

275

275

275

275

720

275

275

275

275

275

720

-20 to 450

451 to 800

801 to 1000 -21 to -75 -76 to -150

-151 to -450

185

285

615

1235

1845

2750

185

285

615

1235

1845

2750 — — — — — — — — — — — — — — — — — — — — — —

— — — — — — — — — — — — 225

445

670

1115 — — — — — — — — — — — — — — — — — —

230

230

230

230

230

415

230

230

230

230

230

415

230

230

230

415

230

230

230

230

230

415

230

230

230

230

230

415

230

230

230

230

230

415

— — — — — — 275

275

720

1440

1485

1600 — — — — — — — — — — — — — — — — — — — — — —

— — — — — — — — — — — — — — — — 275

275

720

1440

2160

2750 — — — — — — — — — — — —



Stainl

ess

Sprin

g

Tung

sten

or In

cone

lSte

el Sp

rings

-450

-400

-300

-200

-1000

100

200

300

400

500

600

700

800

900

1,00

0

020

040

060

080

010

0012

0014

0016

0018

0020

0024

0028

00

Selection Chart for Vapors, Gases and Liquids1900 and 1900-30 Series, H Orifice - API Area: 0.785 Sq. in.

H

Alloy Steel

Sprin

gs

1905

H/L2

1906

H/L2

1905

H/L3

1906

H/L3

1920

Ht19

22Ht

1924

Ht19

26Ht

1910

H/L2

1912

H/L1

1912

H/L2

1914

H/L1

1916

H/L1

1916

H/L2

1905

Ht

1906

Ht

1910

Ht19

12Ht

1914

Ht19

16Ht

1912

Hc19

14Hc

1916

Hc

1906

Hc

1914

H/L2

1910

H/L3

1912

H/L3

1916

H/L3

1910

Hc

1905

H/L1

1906

H/L1

1905

Hc

1910

H/L1

1914

H/L3

SET

PRES

SURE

- lb

s./S

q. in

.



1900 (SRV-1/Q2.02)1900.67

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, J Orifice - API Area: 1.287 Sq. in.

J

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

-450

-151

-150 -76

-75

-21

-20

+100

+450

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Inlet

Tem

p.Ra

nge

(°F)

Valv

e Si

zeIn

let x

Out

let

1905

Jc19

06Jc

1910

Jc19

12Jc

1914

Jc19

16Jc

1905

Jt19

06Jt

1910

Jt19

12Jt

1914

Jt19

16Jt

1920

Jt19

22Jt

1924

Jt19

26Jt

1905

J/L1

1906

J/L1

1910

J/L1

1912

J/L1

1914

J/L1

1916

J/L1

1905

J/L2

1906

J/L2

1910

J/L2

1912

J/L2

1914

J/L2

1916

J/L2

1905

J/L3

1906

J/L3

1910

J/L3

1912

J/L3

1914

J/L3

1916

J/L3

+800

+100

0St

anda

rdBe

llow

s

ASM

E Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig) &

Tem

pera

ture

Lim

its -

°F

2 x 3

2 x 3

3 x 4

3 x 4

3 x 4

3 x 4

2 x 3

2 x 3

3 x 4

3 x 4

3 x 4

3 x 4

3 x 4

3 x 4

3 x 4

3 x 4

2 x 3

2 x 3

3 x 4

3 x 4

3 x 4

3 x 4

2 x 3

2 x 3

3 x 4

3 x 4

3 x 4

3 x 4

2 x 3

2 x 3

3 x 4

3 x 4

3 x 4

3 x 4

150

300

300

600

900

1500

150

300

300

600

900

1500

300

600

900

1500

150

300

300

600

900

1500

150

300

300

600

900

1500

150

300

300

600

900

1500

1905

-30Jc

1906

-30Jc

1910

-30Jc

1912

-30Jc

1914

-30Jc

1916

-30Jc

1905

-30Jt

1906

-30Jt

1910

-30Jt

1912

-30Jt

1914

-30Jt

1916

-30Jt

1920

-30Jt

1922

-30Jt

1924

-30Jt

1926

-30Jt

1905

-30J/

L119

06-30

J/L1

1910

-30J/

L119

12-30

J/L1

1914

-30J/

L119

16-30

J/L1

1905

-30J/

L219

06-30

J/L2

1910

-30J/

L219

12-30

J/L2

1914

-30J/

L219

16-30

J/L2

1905

-30J/

L319

06-30

J/L3

1910

-30J/

L319

12-30

J/L3

1914

-30J/

L319

16-30

J/L3

150

150

150

150

150

300

150

150

150

150

150

300

150

150

150

300

150

150

150

150

150

300

150

150

150

150

150

300

150

150

150

150

150

300

— — — — — — — — — — — — — — — — — —— — — — — 275

275

500

625

800

800

— — — — — —

285

285

740

1480

2220

2700 — — — — — — — — — — — — — — — — — — — — — — — — — — — —

— — — — — — 80 285

410

825

1235

2060

510

815

1225

2040 — — — — — — — — — — — — — — — — — —

285

285

285

285

285

600

285

285

285

285

285

600

285

285

285

600

275

275

275

275

275

600

275

275

275

275

275

600

275

275

275

275

275

600

-20 to 450

451 to 800

801 to 1000 -21 to -75 -76 to -150

-151 to -450

185

285

615

1235

1845

2700

185

285

615

1235

1845

2700 — — — — — — — — — — — — — — — — — — — — — —

— — — — — — — — — — — — 225

445

670

1115 — — — — — — — — — — — — — — — — — —

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

230

— — — — — — — — — — — — — — — — — — — — — — — —— — — — — 275

275

500

625

800

800

— — — — — — — — — — — — — — — — 275

275

720

1440

2160

2700 — — — — — — — — — — — —



Stainl

ess

Sprin

g

Tung

sten

or In

cone

lSte

el Sp

rings

-450

-400

-300

-200

-1000

100

200

300

400

500

600

700

800

900

1,00

0

020

040

060

080

010

0012

0014

0016

0018

0020

0024

0028

00

Selection Chart for Vapors, Gases and Liquids1900 and 1900-30 Series, J Orifice - API Area: 1.287 Sq. in.

J

Alloy Steel

Sprin

gs

1905

J/L2

1906

J/L2

1905

J/L3

1906

J/L3

1922

Jt19

24Jt

1926

Jt

1912

J/L1

1914

J/L1

1910

Jt19

12Jt

1914

Jt19

16Jt

1905

Jc19

10Jc

1912

Jc19

14Jc

1916

Jc

1906

Jc

1916

J/L1

1910

J/L2

1910

J/L3

1914

J/L3

1916

J/L3

1914

J/L2

1916

J/L2

1912

J/L2

1920

Jt

1906

Jt

1905

Jt 1905

J/L1

1906

J/L1

1910

J/L1

1912

J/L3

SET

PRES

SURE

- lb

s./S

q. in

.



1900 (SRV-1/Q2.02)1900.69

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, K Orifice - API Area: 1.838 Sq. in.

K

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

-450

-151

-150 -76

-75

-21

-20

+100

+450

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Inlet

Tem

p.Ra

nge

(°F)

Valv

e Si

zeIn

let x

Out

let

1905

Kc19

06Kc

1910

Kc19

12Kc

1914

Kc19

16Kc

1905

Kt19

06Kt

1910

Kt19

12Kt

1914

Kt19

16Kt

1920

Kt19

22Kt

1924

Kt19

26Kt

1905

K/L1

1906

K/L1

1910

K/L1

1912

K/L1

1914

K/L1

1916

K/L1

1905

K/L2

1906

K/L2

1910

K/L2

1912

K/L2

1914

K/L2

1916

K/L2

1905

K/L3

1906

K/L3

1910

K/L3

1912

K/L3

1914

K/L3

1916

K/L3

+800

+100

0St

anda

rdBe

llow

s

ASM

E Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig) &

Tem

pera

ture

Lim

its -

°F

3 x 4

3 x 4

3 x 4

3 x 4

3 x 6

3 x 6

3 x 4

3 x 4

3 x 4

3 x 4

3 x 6

3 x 6

3 x 4

3 x 4

3 x 6

3 x 6

3 x 4

3 x 4

3 x 4

3 x 4

3 x 6

3 x 6

3 x 4

3 x 4

3 x 4

3 x 4

3 x 6

3 x 6

3 x 4

3 x 4

3 x 4

3 x 4

3 x 6

3 x 6

150

300

300

600

900

1500

150

300

300

600

900

1500

300

600

900

1500

150

300

300

600

900

1500

150

300

300

600

900

1500

150

300

300

600

900

1500

1905

-30Kc

1906

-30Kc

1910

-30Kc

1912

-30Kc

1914

-30Kc

1916

-30Kc

1905

-30Kt

1906

-30Kt

1910

-30Kt

1912

-30Kt

1914

-30Kt

1916

-30Kt

1920

-30Kt

1922

-30Kt

1924

-30Kt

1926

-30Kt

1905

-30K/

L119

06-30

K/L1

1910

-30K/

L119

12-30

K/L1

1914

-30K/

L119

16-30

K/L1

1905

-30K/

L219

06-30

K/L2

1910

-30K/

L219

12-30

K/L2

1914

-30K/

L219

16-30

K/L2

1905

-30K/

L319

06-30

K/L3

1910

-30K/

L319

12-30

K/L3

1914

-30K/

L319

16-30

K/L3

150

150

150

150

150

300

150

150

150

150

150

300

150

150

150

300

150

150

150

150

150

300

150

150

150

150

150

300

150

150

150

150

150

300

— — — — — — — — — — — — — — — — — — — — — — 275

275

525

600

600

750

— — — — — —

285

285

740

1480

2220

2220 — — — — — — — — — — — — — — — — — — — — — — — — — — — —

— — — — — — 80 285

410

825

1235

2060

510

815

1225

2040 — — — — — — — — — — — — — — — — — —

285

285

285

285

285

600

285

285

285

285

285

600

285

285

285

600

275

275

275

275

275

600

275

275

275

275

275

600

275

275

275

275

275

600

-20 to 450

451 to 800

801 to 1000 -21 to -75 -76 to -150

-151 to -450

185

285

615

1235

1845

2220

185

285

615

1235

1845

2220 — — — — — — — — — — — — — — — — — — — — — —

— — — — — — — — — — — — 225

445

670

1115 — — — — — — — — — — — — — — — — — —

150

150

150

200

200

200

150

150

150

200

200

200

150

200

200

200

150

150

150

200

200

200

150

150

150

200

200

200

150

150

150

200

200

200

— — — — — — — — — — — — — — — — — — — — — — — — — — — — 275

275

525

600

600

750

— — — — — — — — — — — — — — — — 275

275

720

1440

2160

2220 — — — — — — — — — — — —



Stainl

ess

Sprin

g

Tung

sten

or In

cone

lSte

el Sp

rings

-450

-400

-300

-200

-1000

100

200

300

400

500

600

700

800

900

1,00

0

020

040

060

080

010

0012

0014

0016

0018

0020

0022

00

Selection Chart for Vapors, Gases and Liquids1900 and 1900-30 Series, K Orifice - API Area: 1.838 Sq. in.

K

Alloy Steel

Sprin

gs

1922

Kt19

24Kt

1926

Kt

1906

Kt

1905

Kt

1910

Kt19

12Kt

1914

Kt19

16Kt

1906

Kc

1905

Kc19

10Kc

1912

Kc19

14Kc

1916

Kc

1905

K/L1

1906

K/L1

1905

K/L2

1906

K/L2

1905

K/L3

1906

K/L3

1912

K/L2

1914

K/L2

1910

K/L1

1912

K/L1

1914

K/L1

1916

K/L1

1910

K/L2

1910

K/L3

1912

K/L3

1914

K/L3

1916

K/L2

1916

K/L3

1920

Kt

SET

PRES

SURE

- lb

s./S

q. in

.



1900 (SRV-1/Q2.02)1900.71

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, L Orifice - API Area: 2.853 Sq. in.

L

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

-450

-151

-150 -76

-75

-21

-20

+100

+450

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Inlet

Tem

p.Ra

nge

(°F)

Valv

e Si

zeIn

let x

Out

let

1905

Lc19

06Lc

1910

Lc19

12Lc

1914

Lc19

05Lt

1906

Lt19

10Lt

1912

Lt19

14Lt

1916

Lt19

20Lt

1922

Lt19

24Lt

1926

Lt19

05L/

L119

06L/

L119

10L/

L119

12L/

L119

14L/

L119

05L/

L219

06L/

L219

10L/

L219

12L/

L219

14L/

L219

05L/

L319

06L/

L319

10L/

L319

12L/

L319

14L/

L3

+800

+100

0St

anda

rdBe

llow

s

ASM

E Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig) &

Tem

pera

ture

Lim

its -

°F

3 x 4

3 x 4

4 x 6

4 x 6

4 x 6

3 x 4

3 x 4

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

3 x 4

3 x 4

4 x 6

4 x 6

4 x 6

3 x 4

3 x 4

4 x 6

4 x 6

4 x 6

3 x 4

3 x 4

4 x 6

4 x 6

4 x 6

150

300

300

600

900

150

300

300

600

900

1500

300

600

900

1500

150

300

300

600

900

150

300

300

600

900

150

300

300

600

900

1905

-30Lc

1906

-30Lc

1910

-30Lc

1912

-30Lc

1914

-30Lc

1905

-30Lt

1906

-30Lt

1910

-30Lt

1912

-30Lt

1914

-30Lt

1916

-30Lt

1920

-30Lt

1922

-30Lt

1924

-30Lt

1926

-30Lt

1905

-30L/

L119

06-30

L/L1

1910

-30L/

L119

12-30

L/L1

1914

-30L/

L119

05-30

L/L2

1906

-30L/

L219

10-30

L/L2

1912

-30L/

L219

14-30

L/L2

1905

-30L/

L319

06-30

L/L3

1910

-30L/

L319

12-30

L/L3

1914

-30L/

L3

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

— — — — — — — — — — — — — — — — — — — — 275

275

535

535

700

— — — — —

285

285

740

1000

1500 — — — — — — — — — — — — — — — — — — — — — — — — —

— — — — — 80 285

410

825

1235

1500

510

1000

1500

1500 — — — — — — — — — — — — — — —

285

285

285

285

285

285

285

285

285

285

285

285

285

285

285

275

275

275

275

275

275

275

275

275

275

275

275

275

275

275

-20 to 450

451 to 800

801 to 1000 -21 to -75 -76 to -150

-151 to -450

185

285

615

1000

1500

185

285

615

1000

1500

1500 — — — — — — — — — — — — — — — — — — —

— — — — — — — — — — — 225

445

670

1115 — — — — — — — — — — — — — — —

100

100

170

170

170

100

100

170

170

170

170

170

170

170

170

100

100

170

170

170

100

100

170

170

170

100

100

170

170

170

— — — — — — — — — — — — — — — — — — — — — — — — — 275

275

535

535

700

— — — — — — — — — — — — — — — 275

275

720

1000

1500 — — — — — — — — — —



Stainl

ess

Sprin

g

Tung

sten

or In

cone

lSte

el Sp

rings

-450

-400

-300

-200

-1000

100

200

300

400

500

600

700

800

900

1,00

0

020

040

060

080

010

0012

0014

0016

00

Selection Chart for Vapors, Gases and Liquids1900 and 1900-30 Series, L Orifice - API Area: 2.853 Sq. in.

L

Alloy Steel

Sprin

gs

1920

Lt19

22Lt

1924

Lt19

26Lt

1906

Lt

1905

Lt

1910

Lt19

12Lt

1914

Lt

1916

Lt

1905

Lc19

10Lc

1912

Lc19

14Lc

1906

Lc

1910

L/L1

1912

L/L1

1914

L/L2

1914

L/L1

1905

L/L1

1906

L/L1

1905

L/L2

1906

L/L2

1905

L/L3

1906

L/L3

1910

L/L3

1912

L/L3

1910

L/L2

1912

L/L2

1914

L/L3

SET

PRES

SURE

- lb

s./S

q. in

.



1900 (SRV-1/Q2.02)1900.73

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, M Orifice - API Area: 3.60 Sq. in.

M

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

-450

-151

-150 -76

-75

-21

-20

+100

+450

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Inlet

Tem

p.Ra

nge

(°F)

Valv

e Si

zeIn

let x

Out

let

1905

Mc19

06Mc

1910

Mc19

12Mc

1905

Mt19

06Mt

1910

Mt19

12Mt

1914

Mt19

20Mt

1922

Mt19

24Mt

1905

M/L1

1906

M/L1

1910

M/L1

1912

M/L1

1905

M/L2

1906

M/L2

1910

M/L2

1912

M/L2

1905

M/L3

1906

M/L3

1910

M/L3

1912

M/L3

+800

+100

0St

anda

rdBe

llow

s

ASM

E Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig) &

Tem

pera

ture

Lim

its -

°F

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

150

300

300

600

150

300

300

600

900

300

600

900

150

300

300

600

150

300

300

600

150

300

300

600

1905

-30Mc

1906

-30Mc

1910

-30Mc

1912

-30Mc

1905

-30Mt

1906

-30Mt

1910

-30Mt

1912

-30Mt

1914

-30Mt

1920

-30Mt

1922

-30Mt

1924

-30Mt

1905

-30M/

L119

06-30

M/L1

1910

-30M/

L119

12-30

M/L1

1905

-30M/

L219

06-30

M/L2

1910

-30M/

L219

12-30

M/L2

1905

-30M/

L319

06-30

M/L3

1910

-30M/

L319

12-30

M/L3

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

— — — — — — — — — — — — — — — — 275

275

525

600

— — — —

285

285

740

1100 — — — — — — — — — — — — — — — — — — — —

— — — — 80 285

410

825

1100

510

1015

1100 — — — — — — — — — — — —

285

285

285

285

285

285

285

285

285

285

285

285

275

275

275

275

275

275

275

275

275

275

275

275

-20 to 450

451 to 800

801 to 1000 -21 to -75 -76 to -150

-151 to -450

185

285

615

1100

185

285

615

1100

1100 — — — — — — — — — — — — — — —

— — — — — — — — — 225

445

670

— — — — — — — — — — — —

80 80 160

160

80 80 160

160

160

160

160

160

80 80 160

160

80 80 160

160

80 80 160

160

— — — — — — — — — — — — — — — — — — — — 275

275

525

600

— — — — — — — — — — — — 275

275

720

1000 — — — — — — — —



Stainl

ess

Sprin

g

Tung

sten

or In

cone

lSte

el Sp

rings

-450

-400

-300

-200

-1000

100

200

300

400

500

600

700

800

900

1,00

0

020

040

060

080

010

0012

00

Selection Chart for Vapors, Gases and Liquids1900 and 1900-30 Series, M Orifice - API Area: 3.60 Sq. in.

M

Alloy Steel

Sprin

gs

1920

Mt

1922

Mt

1924

Mt

1906

Mt

1905

Mt

1910

M/L

119

12M

/L1

1910

M/L

219

12M

/L2

1910

M/L

319

12M

/L3

1905

M/L

119

06M

/L1

1905

M/L

219

06M

/L2

1905

M/L

319

06M

/L3

1910

Mt

1912

Mt

1914

Mt

1905

Mc

1910

Mc

1912

Mc

1906

Mc

SET

PRES

SURE

- lb

s./S

q. in

.



1900 (SRV-1/Q2.02)1900.75

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, N Orifice - API Area: 4.34 Sq. in.

N

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

-450

-151

-150 -76

-75

-21

-20

+100

+450

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Inlet

Tem

p.Ra

nge

(°F)

Valv

e Si

zeIn

let x

Out

let

1905

Nc19

06Nc

1910

Nc19

12Nc

1905

Nt19

06Nt

1910

Nt19

12Nt

1914

Nt19

20Nt

1922

Nt19

24Nt

1905

N/L1

1906

N/L1

1910

N/L1

1912

N/L1

1905

N/L2

1906

N/L2

1910

N/L2

1912

N/L2

1905

N/L3

1906

N/L3

1910

N/L3

1912

N/L3

+800

+100

0St

anda

rdBe

llow

s

ASM

E Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig) &

Tem

pera

ture

Lim

its -

°F

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

150

300

300

600

150

300

300

600

900

300

600

900

150

300

300

600

150

300

300

600

150

300

300

600

1905

-30Nc

1906

-30Nc

1910

-30Nc

1912

-30Nc

1905

-30Nt

1906

-30Nt

1910

-30Nt

1912

-30Nt

1914

-30Nt

1920

-30Nt

1922

-30Nt

1924

-30Nt

1905

-30N/

L119

06-30

N/L1

1910

-30N/

L119

12-30

N/L1

1905

-30N/

L219

06-30

N/L2

1910

-30N/

L219

12-30

N/L2

1905

-30N/

L319

06-30

N/L3

1910

-30N/

L319

12-30

N/L3

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

— — — — — — — — — — — — — — — — 275

275

450

500

— — — —

285

285

740

1000 — — — — — — — — — — — — — — — — — — — —

— — — — 80 285

410

825

1000

510

1000

1000 — — — — — — — — — — — —

285

285

285

285

285

285

285

285

285

285

285

285

275

275

285

285

275

275

285

285

275

275

275

275

-20 to 450

451 to 800

801 to 1000 -21 to -75 -76 to -150

-151 to -450

185

285

615

1100

185

285

615

1000

1000 — — — — — — — — — — — — — — —

— — — — — — — — — 225

445

670

— — — — — — — — — — — —

80 80 160

160

80 80 160

160

160

160

160

160

80 80 160

160

80 80 160

160

80 80 160

160

— — — — — — — — — — — — — — — — — — — — 275

275

450

600

— — — — — — — — — — — — 275

275

720

1000 — — — — — — — —



Stainl

ess

Sprin

g

Tung

sten

or In

cone

lSte

el Sp

rings

-450

-400

-300

-200

-1000

100

200

300

400

500

600

700

800

900

1,00

0

020

040

060

080

010

00

Selection Chart for Vapors, Gases and Liquids1900 and 1900-30 Series, N Orifice - API Area: 4.34 Sq. in.

N

Alloy Steel

Sprin

gs

1920

Nt19

22Nt

1924

Nt

1906

Nt

1905

Nt

1910

N/L1

1912

N/L1

1910

N/L2

1912

N/L2

1910

N/L3

1912

N/L3

1905

N/L1

1906

N/L1

1905

N/L2

1906

N/L2

1905

N/L3

1906

N/L3

1910

Nt19

12Nt

1914

Nt

1905

Nc19

10Nc

1912

Nc

1906

Nc

SET

PRES

SURE

- lb

s./S

q. in

.



1900 (SRV-1/Q2.02)1900.77

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, P Orifice - API Area: 6.38 Sq. in.

P

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

-450

-151

-150 -76

-75

-21

-20

+100

+450

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Inlet

Tem

p.Ra

nge

(°F)

Valv

e Si

zeIn

let x

Out

let

1905

Pc19

06Pc

1910

Pc19

12Pc

1905

Pt19

06Pt

1910

Pt19

12Pt

1914

Pt19

20Pt

1922

Pt19

24Pt

1905

P/L1

1906

P/L1

1910

P/L1

1912

P/L1

1905

P/L2

1906

P/L2

1910

P/L2

1912

P/L2

1905

P/L3

1906

P/L3

1910

P/L3

1912

P/L3

+800

+100

0St

anda

rdBe

llow

s

ASM

E Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig) &

Tem

pera

ture

Lim

its -

°F

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

4 x 6

150

300

300

600

150

300

300

600

900

300

600

900

150

300

300

600

150

300

300

600

150

300

300

600

1905

-30Pc

1906

-30Pc

1910

-30Pc

1912

-30Pc

1905

-30Pt

1906

-30Pt

1910

-30Pt

1912

-30Pt

1914

-30Pt

1920

-30Pt

1922

-30Pt

1924

-30Pt

1905

-30P/

L119

06-30

P/L1

1910

-30P/

L119

12-30

P/L1

1905

-30P/

L219

06-30

P/L2

1910

-30P/

L219

12-30

P/L2

1905

-30P/

L319

06-30

P/L3

1910

-30P/

L319

12-30

P/L3

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

— — — — — — — — — — — — — — — — 175

175

300

480

— — — —

285

285

525

1000 — — — — — — — — — — — — — — — — — — — —

— — — — 80 285

410

825

1000

510

1000

1000 — — — — — — — — — — — —

285

285

285

285

285

285

285

285

285

285

285

285

275

275

275

275

175

175

275

275

175

175

275

275

-20 to 450

451 to 800

801 to 1000 -21 to -75 -76 to -150

-151 to -450

185

285

525

1100

185

285

525

1000

1000 — — — — — — — — — — — — — — —

— — — — — — — — — 225

445

670

— — — — — — — — — — — —

80 80 150

150

80 80 150

150

150

150

150

150

80 80 150

150

80 80 150

150

80 80 150

150

— — — — — — — — — — — — — — — — — — — — 175

175

300

480

— — — — — — — — — — — — 275

275

525

1000 — — — — — — — —



Stainl

ess

Sprin

g

Tung

sten

or In

cone

lSte

el Sp

rings

-450

-400

-300

-200

-1000

100

200

300

400

500

600

700

800

900

1,00

0

020

040

060

080

010

00

Selection Chart for Vapors, Gases and Liquids1900 and 1900-30 Series, P Orifice - API Area: 6.38 Sq. in.

P

Alloy Steel

Sprin

gs

1920

Pt19

23Pt

1924

Pt

1906

Pt

1905

Pt

1910

P/L1

1912

P/L1

1912

P/L2

1910

P/L2

1912

P/L3

1910

P/L3

1905

P/L1

1906

P/L1

1905

P/L2

1906

P/L2

1905

P/L3

1906

P/L3

1910

Pt19

12Pt

1914

Pt

1905

Pc19

10Pc

1912

Pc

1906

Pc

SET

PRES

SURE

- lb

s./S

q. in

.



1900 (SRV-1/Q2.02)1900.79

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, Q Orifice - API Area: 11.05 Sq. in.

Q

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

-450

-151

-150 -76

-75

-21

-20

+100

+450

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Inlet

Tem

p.Ra

nge

(°F)

Valv

e Si

zeIn

let x

Out

let

1905

Qc19

06Qc

1910

Qc19

12Qc

1905

Qt19

06Qt

1910

Qt19

12Qt

1920

Qt19

22Qt

1905

Q/L1

1906

Q/L1

1910

Q/L1

1912

Q/L1

1905

Q/L2

1906

Q/L2

1910

Q/L2

1912

Q/L2

1905

Q/L3

1906

Q/L3

1910

Q/L3

1912

Q/L3

+800

+100

0St

anda

rdBe

llow

s

ASM

E Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig) &

Tem

pera

ture

Lim

its -

°F

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

6 x 8

150

300

300

600

150

300

300

600

300

600

150

300

300

600

150

300

300

600

150

300

300

600

1905

-30Qc

1906

-30Qc

1910

-30Qc

1912

-30Qc

1905

-30Qt

1906

-30Qt

1910

-30Qt

1912

-30Qt

1920

-30Qt

1922

-30Qt

1905

-30Q/

L119

06-30

Q/L1

1910

-30Q/

L119

12-30

Q/L1

1905

-30Q/

L219

06-30

Q/L2

1910

-30Q/

L219

12-30

Q/L2

1905

-30Q/

L319

06-30

Q/L3

1910

-30Q/

L319

12-30

Q/L3

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

— — — — — — — — — — — — — — 165

165

250

300

— — — —

165

165

300

600

— — — — — — — — — — — — — — — — — —

— — — — 80 165

300

600

165

600

— — — — — — — — — — — —

115

115

115

115

115

115

115

115

115

115

115

115

115

115

115

115

115

115

115

115

115

115

-20 to 450

451 to 800

801 to

1000 -21 to -75 -76 to -150

-151 to -450

165

165

300

600

165

165

300

600

— — — — — — — — — — — — — —

— — — — — — — — 165

445

— — — — — — — — — — — —

70 70 115

115

70 70 115

115

115

115

70 70 115

115

70 70 115

115

70 70 115

115

— — — — — — — — — — — — — — — — — — 165

165

250

300

— — — — — — — — — — 165

165

300

600

— — — — — — — —



Stainl

ess

Sprin

g

Tung

sten

or In

cone

lSte

el Sp

rings

-450

-400

-300

-200

-1000

100

200

300

400

500

600

700

800

900

1,00

0

010

020

030

040

050

060

0

Selection Chart for Vapors, Gases and Liquids1900 and 1900-30 Series, Q Orifice - API Area: 11.05 Sq. in.

Q

Alloy Steel

Sprin

gs

1920

Qt19

22Qt

1906

Qt

1910

Q/L1

1912

Q/L1

1905

Qt19

06Qt

1910

Qt19

12Qt

1910

Qc19

12Qc

1905

Qc19

06Qc

1905

Q/L1

1906

Q/L1

1905

Q/L2

1906

Q/L2

1905

Q/L3

1906

Q/L3

1910

Q/L2

1910

Q/L3

1912

Q/L2

1912

Q/L3

SET

PRES

SURE

- lb

s./S

q. in

.



1900 (SRV-1/Q2.02)1900.81

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, R Orifice - API Area: 16.0 Sq. in.

R

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

-450

-151

-150 -76

-75

-21

-20

+100

+450

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Inlet

Tem

p.Ra

nge

(°F)

Valv

e Si

zeIn

let x

Out

let

1905

Rc19

06Rc

1910

Rc19

12Rc

1905

Rt19

06Rt

1910

Rt19

12Rt

1920

Rt19

22Rt

1905

R/L1

1906

R/L1

1910

R/L1

1912

R/L1

1905

R/L2

1906

R/L2

1910

R/L2

1912

R/L2

1905

R/L3

1906

R/L3

1910

R/L3

1912

R/L3

+800

+100

0St

anda

rdBe

llow

s

ASM

E Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig) &

Tem

pera

ture

Lim

its -

°F

6 x 8

6 x 8

6 x 1

06

x 10

6 x 8

6 x 8

6 x 1

06

x 10

6 x 8

6 x 1

06

x 86

x 86

x 10

6 x 1

06

x 86

x 86

x 10

6 x 1

06

x 86

x 86

x 10

6 x 1

0

150

300

300

600

150

300

300

600

300

600

150

300

300

600

150

300

300

600

150

300

300

600

1905

-30Rc

1906

-30Rc

1910

-30Rc

1912

-30Rc

1905

-30Rt

1906

-30Rt

1910

-30Rt

1912

-30Rt

1920

-30Rt

1922

-30Rt

1905

-30R/

L119

06-30

R/L1

1910

-30R/

L119

12-30

R/L1

1905

-30R/

L219

06-30

R/L2

1910

-30R/

L219

12-30

R/L2

1905

-30R/

L319

06-30

R/L3

1910

-30R/

L319

12-30

R/L3

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

— — — — — — — — — — — — — — 55 55 150

200

— — — —

100

100

230

300

— — — — — — — — — — — — — — — — — —

— — — — 80 100

230

300

100

300

— — — — — — — — — — — —

60 60 100

100

60 60 100

100

60 100

60 60 100

100

55 55 100

100

55 55 100

100

-20 to 450

451 to 800

801 to

1000 -21 to -75 -76 to -150

-151 to -450

100

100

230

300

100

100

230

300

— — — — — — — — — — — — — —

— — — — — — — — 100

300

— — — — — — — — — — — —

60 60 100

100

60 60 100

100

60 100

60 60 100

100

55 55 100

100

55 55 100

100

— — — — — — — — — — — — — — — — — — 55 55 150

200

— — — — — — — — — — 100

100

230

300

— — — — — — — —



Selection Chart for Vapors, Gases and Liquids1900 and 1900-30 Series, R Orifice - API Area: 16.0 Sq. in.

R

050

100

150

200

250

300

Stainl

ess

Sprin

g

Tung

sten

or In

cone

lSte

el Sp

rings

-450

-400

-300

-200

-1000

100

200

300

400

500

600

700

800

900

1,00

0

1922

Rt

1906

Rt

1905

Rc19

06Rc

1905

R/L1

1906

R/L1

1910

Rt

1910

Rc

1910

R/L1

1912

R/L1

1912

Rt

1912

Rc

1905

R/L2

1906

R/L2

1905

R/L3

1906

R/L3

1910

R/L3

1912

R/L2

1912

R/L3

Alloy Steel

Sprin

gs

1920

Rt

1905

Rt19

06Rt

1910

R/L2

SET

PRES

SURE

- lb

s./S

q. in

.



1900 (SRV-1/Q2.02)1900.83

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, T Orifice - Area: 30.21 Sq. in.

T

Stan

dard

Valv

e Ty

pe N

umbe

r

Bello

ws

Inlet

R.F.

or R

.J.Ou

tlet

R.F.

-450

-151

-150 -76

-75

-21

-20

+100

+450

Back

Pre

ss. L

imits

(psig

) at 1

00°F

Inlet

Tem

p.Ra

nge

(°F)

Valv

e Si

zeIn

let x

Out

let

1905

Tc19

06Tc

1910

Tc19

05Tt

1906

Tt19

10Tt

1920

Tt19

05T/

L119

06T/

L119

10T/

L119

05T/

L219

06T/

L219

10T/

L219

05T/

L319

06T/

L319

10T/

L3

+800

+100

0St

anda

rdBe

llow

s

ASM

E Fla

nged

Rat

ings

Inlet

Pre

ssur

e (p

sig) &

Tem

pera

ture

Lim

its -

°F

8 x 1

08

x 10

8 x 1

08

x 10

8 x 1

08

x 10

8 x 1

08

x 10

8 x 1

08

x 10

8 x 1

08

x 10

8 x 1

08

x 10

8 x 1

08

x 10

150

300

300

150

300

300

300

150

300

300

150

300

300

150

300

300

1905

-30Tc

1906

-30Tc

1910

-30Tc

1905

-30Tt

1906

-30Tt

1910

-30Tt

1920

-30Tt

1905

-30T/

L119

06-30

T/L1

1910

-30T/

L119

05-30

T/L2

1906

-30T/

L219

10-30

T/L2

1905

-30T/

L319

06-30

T/L3

1910

-30T/

L3

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

150

— — — — — — — — — — 50 50 65 — — —

65 65 300

— — — — — — — — — — — — —

— — — 65 65 300

300

— — — — — — — — —

30 30 100

30 30 100

100

30 30 100

30 30 60 30 30 60

-20 to 450

451 to 800

801

to 10

00-21 to -75 -76 to -15

0-15

1 to -450

65 65 300

65 65 300

— — — — — — — — — —

— — — — — — 225

— — — — — — — — —

30 30 100

30 30 100

100

30 30 100

30 30 60 30 30 60

— — — — — — — — — — — — — 50 50 65

— — — — — — — 65 65 120

— — — — — —



Stainl

ess

Sprin

g

Tung

sten

or In

cone

lSte

el Sp

rings

050

100

150

200

250

300

-450

-400

-300

-200

-1000

100

200

300

400

500

600

700

800

900

1,00

0

Selection Chart for Vapors, Gases and Liquids1900 and 1900-30 Series, T Orifice - Area: 30.21 Sq. in.

T

Alloy Steel

Sprin

gs

1920

Tt

1905

Tt19

06Tt

1910

T/L1

1910

T/L2

1910

T/L3

1910

Tt

1905

Tc19

06Tc

1905

T/L1

1906

T/L1

1910

Tc

1905

T/L2

1906

T/L2

1905

T/L3

1906

T/L3

SET

PRES

SURE

- lb

s./S

q. in

.



1900 (SRV-1/Q2.02)1900.85

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, V Orifice - Area: 50.26 Sq. in.

Selection Table for Vapors, Gases and Liquids1900 and 1900-30 Series, W Orifice - Area: 78.996 Sq. in.

V & W

Standard

Valve Type Number

BellowsInlet

R.F. or R.J.OutletR.F.

-20+100

+101+415

+416+1000

Back Press. Limits(psig) at 100°FValve Size

Inlet x Outlet

1905V1906V1910V1920V

Standard Bellows

ASME Flanged Ratings Inlet Pressure (psig) & Temperature Limits - °F

10 x 1410 x 1410 x 1410 x 14

150300300300

1905-30V1906-30V1910-30V1920-30V

150150150150

303010030

154154300—

154154300—

———154

303010030

Standard

Valve Type Number

BellowsInlet

R.F. or R.J.OutletR.F.

-20+100

+101+415

+416+1000

Back Press. Limits(psig) at 100°FValve Size

Inlet x Outlet

1905W1906W1910W1920W

Standard Bellows

ASME Flanged Ratings Inlet Pressure (psig) & Temperature Limits - °F

12 x 1612 x 1612 x 1612 x 16

150300300300

1905-30W1906-30W1910-30W1920-30W

150150150150

909018090

154154300—

154154300—

———154

909018090

1900Capacities (USCS)


1900 Flanged Valve Orifice Capacities for Air (USCS Units)ASME B & PVC, Section VIII

Capacities Based on Set Pressure plus 10%overpressure or 3 psig, whichever is greater.

Capacities in standard feet of air per minute @ 60°F.

Air

6575951171391611842062282502943383824264715155596036476917367808248689129561000104510891133135415751795201622372458267828993120334144455549665388611106813276

18321126732839045151357563669882194410671190131414371560168318061930205321762299242225462669279229153038316137774393500956256241687574738089870593211240015480185602471930878

—

46853968384099811551313147116281786210124162731304633613676399143074622493752525567588261976512682771437458777380889663112391281514390159661754119117206922226823843317213959947477

———

10971264160019692338270730763445381441834922566063987136787486129351100891082711565123031304113779145181525615994167321747018208189462263726328300193370937400410914478248472521635585474308

—————

2148247631333856457853016023674674698191963711082125271397215417168631830819753211982264424089255342697928424298703131532760342053565137096443225154858774660007322780453

——————————

3806438855526832811293931067311953132341451417075196362219624757273182987932439350003756140122426824524347804503655292555486580476060863168657297853391336104140116944129747

———————————

9544110041392317134203452355526766299773318836399428214924255664620866850774929813518777294194100616

——————————————————————————

T30.21

R18.6

Q12.85

P7.417

N5.047

M4.186

L3.317

K2.138

J1.496

H0.9127

G0.5849

F0.3568

E0.2279

D0.1279

Orifice Designation

Set Press.(psig)

152030405060708090100120140160180200220240260280300320340360380400420440460480500600700800900100011001200130014001500200025003000400050006000

117134170209249288327367406445524603682760839918996107511541232131113901468154716261704178318621940201924132806319935933986438047735166556059537920988711855157891972323657

30034643753863974084194210431144134615481750195221542356255827602962316433653567376939714173437545774779498151836193720282129222102311124112251132601427015280203282537730425

———

7678851119137816361894215224112669292734443960447749935510602365437059757680928609912596421015810675111911170812224127411325715840184222100526587261702875231334339173649939082519946490777819

———

1702196224833055362842004773534659186491763687819926110721221713362145071565216798179431908820233213782252423669248142595927104282502939535121404874657352299580256375169477752038092986655

——————

258929853778464955206391726381349005987611619133611510416846185892033122074238162555927301390443078632529342713601437756394994124142984447265343962151708637957688288

———————————

6594760296191183714055162731849220710229282514629583340193845642892473295176556202606386507569511739487838482821872579169496130100567105003109440113876136059

———————————————

15502178732261427829330443825943474486895390459119695497997990409100839111270121700132130142560152990163420

——————————————————————————

V50.26

W78.996

25792297353762346229549756365172327810048968098356115708133061150413167766185118202470219823237175254528271880

——————————————————————————

4053846737591347277086407100044113681127318140954154591181865209138236412263685290959318233345506372780400053427327

——————————————————————————

NOTE: 1 Relieving capacities indicated are 90% of average capacity in accordance with the latest ASME Code requirements.For temperatures other than 60° F and specific gravities other than air use formula sizing method.

SIZING: Refer to the sizing section for formulas for both ASME and API sizing. Valves may be sized for either ASME or APIapplications.


1900 (SRV-1/Q2.02)1900.87

1900 and 1900TD Flanged Valve Orifice Capacities for Steam (USCS Units)

ASME B & PVC, Section VIII

Capacities Based on Set Pressure plus 10%overpressure or 3 psig, whichever is greater.Capacities in lbs. per hour of saturated steam

Steam

18421226833039245451657864070282695010731197132114451569169318171941206521892312243625602684280829323056318037994419503856586277689775168136875588989420130241723521551

513592749922109512671440161317861959230426502996334136874032437847245069541557616106645267987143748978348180852688711060012328140561578417512192412096922697244252482226279363344808260121

131415151916235928013243368541274569501158956779766385489432103161120012084129681385214737156211650517389182731915720041209262181022694271153153535956403774479849218536395806062481634966722292943122995

—

307835494490552665617597863296681070311739138101588117952200232209524166262372830830379324503452136592386634073542806448774694849019510905316163517738728422894583104939115295125650136006146361148740157468217720

——

60276948879210819124871487416902189292095722984270393109435149392044325947314513705542559480635356759071645757007975583810878659192095975100030104085124360144365164911185186205461225736246011

———————

106791231215578191702276326355299483354037133407254791055095622806946576650838359102098205105390112575119760126945134130141315148500155685162869170054177239184424220349256274292199328124364048

—————————

267813087639066480755708466093751028411193120102129120147138166156184174202192220210238228256246274264292282310

————————————————————————

T30.21

R18.6

Q12.85

P7.417

N5.047

M4.186

L3.317

K2.138

J1.496

H0.9127

G0.5849

F0.3568

E0.2279

D0.1279

Orifice Designation

Set Press.(psig)

1520304050607080901001201401601802002202402602803003203403603804004204404604805006007008009001000110012001300140014231500200025002903

328378478589699809920103011401251147216921913213423552575279630173238345936793900412143424562478350045225544656666770787489781008211186122891339314497156011585516785232073071138401

84297012281511179520782361264529283211377843444911547860446611717777448311887794441001010577111441171012277128431341013977145431737620209230422587528708315413437437207400404069143079595627882198557

21542483314238664591531560406765748982149663111121256114011154601690918358198072125722706241552560427053285032995231401328503429935749371984444451690589366618273428806748792095166102412104076110183152343201601

—

4776550669668573101801178613393149991660618213214262463927852310663427937492407054391847132503455355856771599856319866411696247283876051792648247798543114609130676146742162808178874194940211006227072230764244304

———

7266837810600130451548917934203782282325267277123260137490423794726852157570466193666825717147660381492863819127096159101048105938110827115716120605125494149939174385198831223276247722

—————————

185022133126989332133943745661518855810964333705578300595453107901120349132797145245157693170141182589195037207485219933232381244829257277269725282173294621307069319517381757

—————————————

4349850149634517808492716107348121981136613151246165878195143224408253673282938312203341467370732399997429262458527

————————————————————————

V50.26

W78.996

7236783432105563129907154251178595202938227282251626275970342657373345422033470720519408568095616783665471714158762846

————————————————————————

113743131135165919204181242443280706318968357230395493433755510280586804663329739853816378892903969427104595211224761199001

————————————————————————

NOTE 1: Relieving capacities indicated are 90% of average capacity in accordance with the latest ASME Code requirements.Maximum permissible set pressure on steam is 2903 psig. 3000 psig capacities are included for interpolation purposes only.

NOTE 2: For Superheat Correction Factors refer to pages VS.18 and VS.19 in the Valve Sizing section of this catalog.SIZING: Refer to the sizing section for formulas for both ASME and API sizing. Valves may be sized for either ASME or API

applications.



1900LA Flanged Valve Orifice Capacities for Water (USCS Units)

ASME B & PVC, Section VIII

Capacities based on Set Pressure plus 10% overpressure or3 psig, whichever is greater, 0 psig back pressure. Capacities in gallons of

water per minute at 70°F, 90% of average capacity.

Water

131518212426283032343740434548505254575961626466686971737476839096102107113118122127132152170186215241264

38435260677379859095104112120127134141147153159164170175180185190194199204208212233251269285300315329343355368425475521601672—

98111133153172188203217230243266287307326344360377392407421435448461474486498510521533544596643688730769807842877910942108812161332———

230260312360403441476509540570624674721764806845883919953987101910511081111111401168119512221248127413961508161217101802189019742055213222072549—————

4515106117057898649339981058111612221320141114971578165517291799186719331996205821172175223222872341239324452495273329523156334835293701——————————

799904108312501398153116541768187619772166233925012653279629333063318833093425353736463752385539554052414842414332442248445232559359326253———————————

20062267271631363506384141494435470449595432586762736653701373557682799682988589——————————————————————————

T30.21

R18.6

Q12.85

P7.417

N5.047

M4.186

L3.317

K2.138

J1.496

H0.9127

G0.5849

F0.3568

E0.2279

D0.1279

Orifice Designation

Set Press.(psig)

152030405060708090100120140160180200220240260280300320340360380400420440460480500600700800900100011001200130014001500200025003000400050006000

242733384247505457606671768185909497101105108112115118121124127130133135148160171182192201210219227235271303332384429470

63718598110120130139147155170184197209220231241251260270278287295304311319327334341348382412441467493517540562583603697779854986——

161182218252282308333356378398436471504535564591617643667690713735756777797817836855873891977105511281196126113221381143814921544178319942184———

35740448455962568573979183988496810461118118612501311137014261479153115821630167817241768181218551896193719772166233925012653279629333063318833093425——————

544615737851951104211251203127613451474159217021805190319952084216922512330240724812553262326912757282228862948300932963560380640374255———————————

1385156618762166242226532866306432503426375340534333459648455081530755245733593461286317650066786852702171867348750676618392906496901027810834

———————————

3258368344115094569562396739720476418054882395301018810806113911194712478129881347813951

——————————————————————————

V50.26

W78.996

54206127733984759475103801121111985127131340014679158551695017978189511987620760216082242323210

——————————————————————————

85209631115361332114893163141762218838199812106223072249212664228258297863124032629339623524436481

——————————————————————————

NOTE: 1 Relieving capacities indicated are 90% of average capacity in accordance with the latest ASME Code requirements.SIZING: Refer to the sizing section for formulas for both ASME and API sizing. Valves may be sized for either ASME or API

applications.

Documents

In-house Reviewppvs.com/downloads/Consolidated+-+Catalog+1900+series.pdf · In-house Review. 1900 Scope of Design 1900 (SRV-1/Q2.02) 1900.1 Table of Contents Scope of Design ... 1912