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API 6D THROUGH CONDUIT SLAB
& PARALLEL EXPANDING
GATE VALVES
GWC ItaliaProven technology
for individual valve solutionsworldwide
PG
V-1
00
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GWC ITALIA – Proven technology for individual valve solutions worldwide
2
w w w . g w c i t a l i a . c o m
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table of Contents
GWC Italia Worldwide network ............................................................................................4
Company overview, Certifications & standards ................................................................5
Through Conduit Slab Gate Valve Standard Features ...........................................................6
Through Conduit Parallel Expanding Gate Valve Standard Features .....................................7
API Through Conduit Slab Gate Valve Model ........................................................................8
API 6D Through Conduit Slab Gate Valve Standard Features ...............................................9
Model 81 Through Conduit Slab Gate Valve .........................................................................10
Standard Parts and Materials ...............................................................................................11
Model API 6D Through Conduit Parallel Gate Valve .............................................................12
API 6D Through Conduit Parallel Expanding Gate Valve Standard Features .......................13
Model 82 Through Conduit Parallel Expanding Gate Valve ..................................................14
Standard Parts and Materials ...............................................................................................15
Operation Principles .............................................................................................................16
Centralizer Operation Principles ...........................................................................................17
Cavity Pressure Relief ..........................................................................................................18
ordering Guide ...................................................................................................................19
Class 150 .....................................................................................................................20
Class 300 .....................................................................................................................21
Class 600 .....................................................................................................................21
Class 900 .....................................................................................................................21
Class 300 .....................................................................................................................22
Class 600 .....................................................................................................................23
Class 900 .....................................................................................................................23
Class 1500 ...................................................................................................................24
Class 2500 ...................................................................................................................24
flow Coefficients (Cv) Value ..............................................................................................25
Slab And Parallel Gate Valves
API 6D Through Conduit Parallel Expanding Gate Valve
API 6D Though Conduit Slab Gate Valve
API 6D Though Conduit Parallel Expanding Gate Valve
GWC ITALIA – Proven technology for individual valve solutions worldwide
4
GWC Italia Worldwide Network
Italia
U.a.e.
China
Californiatexas
Usa HeadqUarters ProdUCtIon & salesGWC USA, Inc.8502 Crippen StreetBakersfield, CA. 93313ph: +1-661.834.1775fax: +1-661.834.2072Email: [email protected]
salesGWC USA, Inc24624 Interstate 45 N.Spring, Texas 77386Toll Free: +1.877.768.3760ph: +1.281.719-1986Email: [email protected]
salesGWC Valve & Controls DMCC, Dubai1506, Platinum TowerI-Cluster, Jumeirah Lake TowersDubai UAEph: +971-44.539.358Email: [email protected]
ProdUCtIon & salesGWC Valve Manufacturing (Shanghai) Co., Ltd.No 3600 Jihe Rd,Huaxin Town,Qingpu, Shanghai 201708,China ph: +86-21.597.987.99fax: +86-21.597.987.90Email: [email protected]
Italy GroUP HeadqUarters, ProdUCtIon & salesGWC Italia, SpAVia A. Grandi, 520056 Trezzo Sull’AddaMilano, ItalyPhone: 39-02-86882941Fax: 39-02-86882942Email: [email protected]
w w w . g w c i t a l i a . c o m
CERTIFICATIONS & STANDARDSAmerican Standards
ISO 9001:2008 Quality Management SystemsISO 14001 Environmental ManagementOHSAS 18001:2007 Occupational Health and Safety Management SystemISO/TS 29001 Petroleum, Petrochemical and Natural Gas Industries - Sector Specific Quality Management SystemsCE/PED Pressure Equipment DirectiveCU-TR Technical Reglament Conformity Certificate TRCUCRN Canadian Registration NumberZ245.15.96 Pipeline Steel ValvesATEX European for explosive atmosphereSIL3 Measurement of performance required for safety instrument function
International Standards
american Petroleum InstituteAPI-6D Specification for Pipeline ValvesAPI-6D SS Specification for Subsea Pipeline ValvesAPI-6A Specification for Wellhead and Christmas Tree EquipmentAPI-6FA Specification for Fire Test for ValvesAPI-594 Check Valves: Wafer, Wafer-Lug, and Double Flanged TypeAPI-598 Valve Inspection and TestingAPI-600 Bolted Bonnet Steel Gate Valves for Petroleum and Natural Gas IndustriesAPI-602 Compact Steel Gate Valves- Flanged, Threaded, Welding and Extended-Body EndsAPI-607 Fire Test for Soft-Seated Quarter-Turn ValvesAPI-608 Metal Ball Valves - Flanged, Threaded, and Welding EndAPI-609 Butterfly Valves: Double Flanged, Lug and Wafer-TypeAPI-Q1 Specification for Quality Programs for the Petroleum, Petrochemical & Natural Gas
american society of Mechanical engineersASME-B1.20.1 Pipe Threads, General Purpose (inch)ASME-B16.11 Forged Fittings, Socket-Welding and ThreadedASME-B16.10 Face to Face and End to End Dimensions of ValvesASME-B16.5 Pipe Flanges and Flanged Fittings NPS 1/2 ~ NPS 24ASME-B16.47 Large Diameter Steel Flanges NPS 26 ~ NPS 60ASME-B16.25 Buttwelding EndsASME-B16.34 Valves - Flanged, Threaded and Welding End
GWC Italia spa with its Headquarters in Milan,
Italy designs, manufacturers and markets
valves with one of the most extensive lines you
will find in the Industry today. GWC Italia
SpA which is founded by an Italian Group
& USA Entrepreneurial Management team,
has become the Parent Company of the long
standing GWC Worldwide Companies. This
Italian & USA team has a history of building
and managing successful valve manufacturing
companies over the past 40 years. The valves
manufactured in Italy will be complementary to
the existing GWC line consisting of diversified
flow control packages in a variety of alloys,
trims, configurations, sizes and pressure classes,
from general to severe applications. GWC Valves
are used in major applications for Upstream,
Downstream & Transportation Segments of
the Oil & Gas Industry, E&P, Petrochemical,
Chemical, Mining/Minerals, Power, Marine and
Industrial markets.
GWC Italia spa extensive line of valve and flow
control products include but not limited to:
n Trunnion Mounted Ball Valves
(soft & metal seated)
n Split Body
n Top Entry
n Welded Body
n Subsea
n Cryogenic & High Temperature
n Two Balls One Body DBBV
n Pipeline Gate and Check Valves
n Floating Ball Valves
n Gate, Globe and Check Valves including
Cast & Forged
n Butterfly Valves including Triple Offset, High
Performance and Resilient Seated
n Dual Plate Check Valves
n Needle and Gauge Valves
n Wellhead Gate Valves
GWC Italia Spa products are designed, engineered
and manufactured to exceed its customer’s
stringent process requirements including API 6D,
API 6A, API 6DSS, API 600, API 602, API 608, ISO
9001, PED, ATEX, SIL 3 and TA – Luft.
Proven technologyfor individual valve solutions
worldwide 5
GWC ITALIA – Proven technology for individual valve solutions worldwide
6
aPI 6d tHroUGH CondUIt slab Gate ValVe featUres
MaIn featUresslab Gate Valven Full bore for pigging / reduced pressure drop
n Bi-directional
n Pressure / spring / energized O-ring assisted seats for high / low pressure sealing
n Seat sealing faces are not in the flow path
n Single piston effect seats for internal cavity pressure relief
n Double block and bleed capabilities
n Sealant injectors for seats / stem
Commonly Used applicationsn Oil and gas industry
n Power and mining industry
n Offshore / Onshore applications
n Sub-sea applications
n Double block and bleed applications
n Scrapers / Pig Traps / Pig Launchers and Receivers
n Upstream gas compressor isolation
n Critical and primary isolation
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aPI 6d tHroUGH CondUIt Parallel eXPandInG Gate ValVe featUres
MaIn featUresParallel expanding Gate Valven Full bore for pigging / reduced pressure drop
n Bi-directional
n Mechanically assisted expanding gate for positive high / low pressure sealing
n Seat sealing faces are not in the flow path
n Optional internal / external by-pass system for internal cavity pressure relief
n Double block and bleed capabilities
n Sealant injectors for seats / stem
Commonly Used applicationsn Oil and gas industry
n Power and mining industry
n Offshore / Onshore applications
n Sub-sea applications
n Double block and bleed applications
n Scrapers / Pig Traps / Pig Launchers and Receivers
n Upstream gas compressor isolation
n Critical and primary isolation
GWC ITALIA – Proven technology for individual valve solutions worldwide
8
aPI 6d tHroUGH CondUIt slab Gate ValVe
Stem
Bonnet
Gate
Body
Bonnet stud and nut
Floating seat with energized O-ring provides constant contact with gate
Full-bore, through-conduit design reduces turbulence and pressure drop
slab Gate Valve design
w w w . g w c i t a l i a . c o m
9
standard features and benefits1. seats / fire-safe design
(See Figure A)
Depending upon the service of the
valve, the seats can be supplied
with soft seat inserts / hard face
deposited metal seats.
The line pressure / springs /
energized O-rings, assists the single
piston effect designed seats for
high / low pressure sealing against
the slab gate face, ensuring that a
tight seal is formed. The soft seats
and the seat pockets have been
designed to be fire-safe.
During a fire, the soft seats can be
destroyed. As the seats are being
slowly burnt, the upstream pressure
forces the slab gate against the
downstream seat. The downstream
seat is thereby forced against
the back of the seat pocket. The
downstream seat is now forming a
metal-to-metal seal with the back
of the seat pocket face. When the
soft seats have been fully burnt, the
metal face of the seat now forms
a metal-to-metal seal with the slab
gate. Metal seated seats are fire-
safe by design.
2: double block and bleed
(See Figure A)
The double block feature is the result
of the two seats sealing against the
slab gate, with the valve in the fully
closed position, whether the line is
under pressure or not.
When there is no pressure on either
side of the seats, the springs /
energized O-rings force the seats to
form a tight seal on the upstream /
downstream sides of the slab gate.
When there is pressure in the line,
the upstream pressure forces the
slab gate against the downstream
seat, whilst also forcing the
upstream seat against the slab gate,
due to the single piston effect design
of the seats.
This has now formed a tight seal or
“double block” on both sides of the
slab gate.
With the slab gate now tightly sealed
on both sides, the vent / drain
plug in the body can be released
which will “bleed” the body cavity
of pressure. This feature allows the
draining of the cavity to remove
debris / take a sample of the
medium / test the sealing integrity of
the seats.
3: automatic Cavity relief
(See Figure B)
Should the pressure in the body
cavity exceed the line pressure, due
to thermal expansion caused by
an internal / external heat source,
the greater cavity pressure will
push the seat off the slab gate
face allowing the excess cavity
pressure to be vented into the line.
This feature ensures that there is
pressure equilibrium between the
line and body cavity, which prevents
the body material becoming over-
stressed.
4: seat sealant Injection
(See Figure C & D)
Due to possible damage of the seats
by debris in the line / stem O-ring
failure due to a prolonged service,
there can be leakage from these
areas. To extend the service life
of the valve until the valve can be
removed from the line for repair, a
sealant can be injected through the
seat / stem injection fittings.
aPI 6d tHroUGH CondUIt slab Gate ValVe standard featUres
figure a
figure C
figure d
Figure-B
figure b
GWC ITALIA – Proven technology for individual valve solutions worldwide
10
Model 81 tHroUGH CondUIt slab Gate ValVe
section a-a detail b
w w w . g w c i t a l i a . c o m
11
Item descriptionCarbon steel-20°f to 250°f
[-29°C to 121°C]
Carbon steel low temperature-50°f to 250°f
[-46°C to 121°C]
1 Body A216 WCB/WCC A352 LCB/LCC
2 Bonnet A216 WCB/WCC A352 LCB/LCC
3 Slab Gate A515 Gr.70 or A105N/ENP A350 LF2/ENP
4 Seat Ring A105N/ENP A350 LF2/ENP
5 Seat Insert RPTFE RPTFE
6 Stem A182 F6A A182 F6A
7 Yoke A216 WCB/WCC A352 LCB/LCC
8 Stem Cover ANSI 1020 ANSI 1020
9 Indication Rod SS304 SS304
10 Drain & Vent SS304 SS304
11 Stem Sealant Fitting SS304 SS304
12 Seat Sealant Fitting SS304 SS304
13 Upper V-Type Packing Braided Graphite Braided Graphite
14 Lantern Ring A182 F6A A182 F6A
15 Lower V-Type Packing Braided Graphite Braided Graphite
16 Bonnet Gasket SS304 + Graphite SS304 + Graphite
17 Bonnet Stud A193 B7M A320 L7M
18 Bonnet Nut A194 2HM A194 7M
19 Yoke Stud A193 B7M A320 L7M
20 Yoke Nut A194 2HM A194 7M
21 Indication Rod Nut SS304 SS304
22 Seat O-Ring HNBR PTFE
23 Indication O-Ring HNBR PTFE
24 Gear Operator Cast Iron Cast Iron
25 Gear Operator Bolt A193 B7M A320 L7M
26 Stem Nut AL-Bronze AL-Bronze
27 Bearing Housing A216 WCB/WCC A352 LCB/LCC
28 Thrust Bearing AISI 1070 AISI 1070
29 Hand Wheel Nut AISI 1020 AISI 1020
30 Stem Nut O-Ring HNBR PTFE
31 Hand Wheel Ductile Iron Ductile Iron
*We reserve the right to make changes to materials and specifications
standard Parts and MaterIals
GWC ITALIA – Proven technology for individual valve solutions worldwide
12
aPI 6d tHroUGH CondUIt Parallel eXPandInG Gate ValVe
Parallel Expanding Gate
Body
Gate centralizer provides positive
control for improved operation
Stem
Bonnet
Bonnet stud and nut
Full-bore, through-conduit design reduces turbulence and pressure drop
Parallel expanding Gate Valve design
w w w . g w c i t a l i a . c o m
13
standard features and benefits1: seats/fire-safe design (See Figure A)
Depending upon the service of the valve, the seats
can be supplied with soft seat inserts / hard face
deposited metal seats.
As the sealing action of the valve is mechanically
activated, line pressure is not required to force the
seats against the expanding gate. Therefore, the
seats are of a very basic, but rugged design.
The soft seats and the seat pockets have been
designed to be fire-safe.
The sealing action of the fire-safe design is the
same as that of the slab gate valve.
Metal seated seats are fire-safe by design.
2. double block and bleed (See Figure A)
The double block feature is the result of the two seats
sealing against the expanding gate, with the valve
in the fully closed position, whether the line is under
pressure or not.
When there is no pressure on either side of the
seats, the springs / energized O-rings force
the seats to form a tight seal on the upstream /
downstream sides of the expanding gate.
When there is pressure in the line, the upstream
pressure forces the expanding gate against the
downstream seat, whilst also forcing the upstream
seat against the expanding gate, due to the
single piston effect design of the seats.
This has now formed a tight seal or “double block”
on both sides of the expanding gate.
With the expanding gate now tightly sealed on
both sides, the vent / drain plug in the body can
be released which will “bleed” the body cavity of
pressure. This feature allows the draining of the
cavity to remove debris / take a sample of the
medium / test the sealing integrity of the seats.
3. sealant Injection (See Figure C & D)
Due to possible damage of the seats by debris in
the line / stem O-ring failure due to a prolonged
service, there can be leakage from these areas. To
extend the service life of the valve until the valve can
be removed from the line for repair, a sealant can be
injected through the seat / stem injection fittings.
Figure - C Figure - D
figure a
Figure - C Figure - D
figure C
Figure - C Figure - D
figure d
aPI 6d tHroUGH CondUIt Parallel eXPandInG Gate ValVe standard featUres
GWC ITALIA – Proven technology for individual valve solutions worldwide
14
Model 82 tHroUGH CondUIt Parallel eXPandInG Gate ValVe
section a-a Centralizer detail b
w w w . g w c i t a l i a . c o m
15
Item descriptionCarbon steel-20°F to 250°F
[-29°C to 121°C]
Carbon steelHigh temperature
-20°F to 650°F[-29°C to 343°C]
Carbon steellow temperature
-50°F to 250°F[-46°C to 121°C]
1 Body A216 WCB/WCC A216 WCB/WCC A352 LCB/LCC
2 Bonnet A216 WCB/WCC A216 WCB/WCC A352 LCB/LCC
3 Expanding Gate A216 WCB/WCC/ENP
A216 WCB/WCC + HF-6 Hard Faced A352 LCB/LCC/ENP
4 Seat Ring A105N/ENP A105N/ENP A350 LF2/ENP
5 Seat Insert/Seal Surface RPTFE A105N +
HF-6 Hard Faced RPTFE
6 Stem A182 F6A A182 F6A A182 F6A
7 Yoke A216 WCB/WCC A216 WCB/WCC A352 LCB/LCC
8 Stem Cover ANSI 1020 ANSI 1020 ANSI 1020
9 Indication Rod SS304 SS304 SS304
10 Drain & Vent SS304 SS304 SS304
11 Stem Sealant Fitting SS304 SS304 SS304
12 Seat Sealant Fitting SS304 SS304 SS304
13 Upper V-Type Packing Braided Graphite Braided Graphite Braided Graphite
14 Lantern Ring A182 F6A A182 F6A A182 F6A
15 Lower V-Type Packing Braided Graphite Braided Graphite Braided Graphite
16 Bonnet Gasket SS304 + Graphite SS304 + Graphite SS304 + Graphite
17 Bonnet Stud A193 B7M A193 B7M A320 L7M
18 Bonnet Nut A194 2HM A194 2HM A194 7M
19 Yoke Stud A193 B7M A193 B7M A320 L7M
20 Yoke Nut A194 2HM A194 2HM A194 7M
21 Indication Rod Nut SS304 SS304 SS304
22 Seat O-Ring HNBR Graphite PTFE
23 Indication Seal HNBR Graphite PTFE
24 Gear Operator Cast Iron Cast Iron Cast Iron
25 Gear Operator Bolt A193 B7M A193 B7M A320 L7M
26 Stem Nut AL-Bronze AL-Bronze AL-Bronze
27 Bearing Housing A216 WCB/WCC A216 WCB/WCC A352 LCB/LCC
28 Thrust Bearing AISI 1070 AISI 1070 AISI 1070
29 Hand Wheel Nut AISI 1020 AISI 1020 AISI 1020
30 Stem Nut O-Ring HNBR Graphite PTFE
31 Hand Wheel Ductile Iron Ductile Iron Ductile Iron
32 Centralizer ANSI 1020/ENP ANSI 1020/ENP A350 LF2/ENP
33 Centralizer Shaft SS410 SS410 SS410
standard Parts and MaterIals
* We reserve the right to make changes to materials and specifications
GWC ITALIA – Proven technology for individual valve solutions worldwide
16
Closed Position: Gate assembly fully expanded (See Figure E)
As the gate and segment assembly are approaching the closed position, the stopper on the segment
has contacted with the lower body stop, which prevents the segment from travelling any further. As
the hand wheel is turned further, the main gate is forced down and against the wedge angle of the
segment. This action expands the gate and segment assembly against the seats to form a tight seal.
Mid travel Position: Gate assembly fully retracted (See Figure F)
As the hand wheel is turned to open the valve, the gate travels up and away from the wedge angle of
the segment. This action retracts the gate and segment assembly sealing force from the seats, which
allows the assembly to travel freely between the seats.
From the fully open to the fully closed positions, a gate centralizing mechanism holds the gate and
segment assembly in the fully retracted position, to ensure that the assembly does not wedge itself
between the seats.
open Position: Gate assembly fully expanded (See Figure G)
As the gate and segment assembly are approaching the open position, the stopper on the segment
has contacted with the upper body stop, which prevents the segment from travelling any further.
As the hand wheel is turned further, the main gate is forced up and against the wedge angle of the
segment. This action expands the gate and segment assembly against the seats to form a tight seal
to isolate the flow from the body cavity.
At this position, the bore holes of the gate and segment are aligned exactly with the valve bore.
aPI 6d tHroUGH CondUIt Parallel eXPandInG Gate ValVe
figure e
Figure F figure f
Figure F figure G
operation Principles
w w w . g w c i t a l i a . c o m
17
The main purpose of the gate centralizer is
to maintain the gate and segment assembly
in the fully retracted position, during the
travel from open to close, to prevent any
wedging action between the assembly and
the seats (See Figure H)
However, the gate centralizer allows the
gate and segment assembly to expand at
the final moment.
During the travel from open to close, the
gate centralizer is maintained in a parallel
position with the seats by the skirt plates,
which are positioned either side of the seats
(See Figure I)
As the gate and segment assembly are
nearing the fully open / closed positions,
the skirt plates allow the gate centralizer
to tilt, which allows the gate and segment
assembly to expand.
The skirt plates also assist in aligning the
gate and segment assembly with the seats
(See Figure J)
aPI 6d tHroUGH CondUIt Parallel eXPandInG Gate ValVe
figure H figure I
figure J
Gate Centralizer operation Principles
GWC ITALIA – Proven technology for individual valve solutions worldwide
18
Figure K Figure L
Due to the design of the expanding gate and seats to form a tight seal, any excess pressure
build-up in the body cavity can’t be self-relieved, as in the slab gate design.
To relieve this body cavity pressure, 2 types of a pressure relief system can be provided on the outside
of the valve body.
The standard type consists of 2 needle valves, a check valve, tubing and fittings. This system relieves
the body cavity pressure to the upstream side of the valve. During normal valve operation, the 2
needle valves must be kept open, so that the upstream line pressure can keep the check valve closed.
When the body cavity pressure exceeds the upstream line pressure, the check valve is
un-seated and the excess pressure is relieved upstream (See Figure K)
The other type of pressure relief system is a safety pressure relief valve fitted on the outside of the
valve body. A drilled and threaded hole connects the body cavity to the safety pressure relief valve.
The safety pressure relief valve is set to relieve pressure at 1.33 times the line pressure, or as per the
clients requirements (See Figure L)
aPI 6d tHroUGH CondUIt Parallel eXPandInG Gate ValVe
figure K figure l
body Cavity Pressure relief
w w w . g w c i t a l i a . c o m
19
Example: 8” Figure # 81150-A-G1-GO
1. MODEL81 – API-6D THRU CONDUIT SLAB GATE VALVE82 – API-6D THRU CONDUIT EXPANDING GATE VALVE
2. RATING 15 - CLASS 150 90 - CLASS 90030 - CLASS 300 150 - CLASS 150060 - CLASS 600 250 - CLASS 2500
3. END CONNECTION0 - RAISED FACE FLANGED 9 - RING TYPE JOINT FLANGED7 - BUTT WELD X - OTHER
4. MATERIAL: BODY + BONNETA - A216 WCB C - A352 LCCB - A216 WCC D - A352 LCB
5. TRIM MATERIAL
ORDERING GUIDE
7. SPECIAL REQUIREMENTSS - SUPPLY COMPLETE INFORMATION
6. OPERATORHO - HANDWHEEL OPERATOR B - BARE STEMGO - BEVEL GEAR OPERATOR
trIM Code
body and bonnet steM Gate seat seat
rInG boltInG teMPerataUre serVICe
G1 A216 WCB A182 F6A
A105+ENPA216 WCB+ENPA515 GR.70+ENP
RTFE** A105+ ENP NACE -20°F TO 250°F
[-29°C TO 121°C]STANDARD
G2 A216 WCC A182 F6A
A105+ENPA216 WCC+ENPA515 Gr.70+ENP
RTFE** A105+ ENP NACE -20°F TO 250°F
[-29°C TO 121°C]STANDARD
G3* A216 WCB A182 F6A
A216 WCB+ST-6-OVERLAY
A105+ST-6 OVERLAY
A105+ ENP NACE -20°F TO 650°F
[-29°C TO 343°C]HIGH
TEMPERATURE
G4* A216 WCCA182 F6A
A216 WCB+ST-6-OVERLAY
A105+ST-6 OVERLAY
A105+ ENP
NACE -20°F TO 650°F[-29°C TO 343°C]
HIGHTEMPERATURE
G5 A352 LCC A182 F6A A350 LF2+ENP RTFE** A350 LF2+
ENP NACE -50°F TO 250°F[-46°C TO 121°C]
LOWTEMPERATURE
G6 A352 LCB A182 F6A A350 LF2+ENP RTFE** A350 LF2+
ENP NACE -50°F TO 250°F[-46°C TO 121°C]
LOWTEMPERATURE
8” API-6D THRU CONDUIT SLAB GATE VALVE, CLASS 150, RF-FLG, A216 WCB BODY X
G1 TRIM, NACE, FIRESAFE, BEVEL GEAR OPERATOR.
*G3, G4 - not aPPlICable for Model 81ST-6: STELLITE-6 ENP: ELECTROLESS NICKEL PLATING
**seat: deVlonFOR 16” CL.300 AND ABOVE;FOR 8” CL.600 AND ABOVE;FOR ALL SIZES OF CL.900 & CL.1500
15 G11. 2. 4. 5. 6.
a3.
81 0 Go7.
GWC ITALIA – Proven technology for individual valve solutions worldwide
20
Class 150
dimensions
size rf rtJ bW b H HW (oPen) W HG (oPen) G WeIGHt
inch mm in mm in mm in mm in mm in mm in mm in mm in mm in kg lbs
2" 178 7.00 191 7.50 216 8.50 49 1.94 145 5.7 470 18.5 260 10.2 - - - - 35 77
3" 203 8.00 216 8.50 283 11.13 74 2.94 180 7.1 695 27.4 260 10.2 - - - - 55 121
4" 229 9.00 241 9.50 305 12.00 100 3.94 245 9.6 800 31.5 270 10.6 - - - - 85 187
6" 267 10.50 279 11.00 403 15.88 150 5.94 344 13.5 1090 42.9 450 17.7 - - - - 140 309
8" 292 11.50 305 12.00 419 16.50 201 7.94 416 16.4 1263 49.7 450 17.7 1263 49.7 250 9.8 240 529
10" 330 13.00 343 13.50 457 18.00 252 9.94 501 19.7 1416 55.7 450 17.7 1416 55.7 250 9.8 350 772
12" 356 14.00 368 14.50 502 19.75 303 11.94 580 22.8 1592 62.7 500 19.7 1592 62.7 300 11.8 450 992
14" 381 15.00 394 15.50 572 22.50 334 13.19 635 25.0 1765 69.5 550 21.7 1765 69.5 310 12.2 600 1323
16" 406 16.00 419 16.50 610 24.00 385 15.19 719 28.3 2027 79.8 600 23.6 2027 79.8 310 12.2 750 1653
18" 432 17.00 445 17.50 660 26.00 436 17.19 810 31.9 2250 88.6 600 23.6 2265 89.2 460 18.1 890 1962
20" 457 18.00 470 18.50 711 28.00 487 19.19 1046 41.2 2350 92.5 700 27.6 2350 92.5 460 18.1 1120 2469
24" 508 20.00 521 20.50 813 32.00 589 23.19 1196 47.1 - - - - 2830 111.4 460 18.1 2000 4409
28" 610 24.00 - - 914 36.00 684 26.94 1250 49.2 - - - - 3144 123.8 610 24.0 2650 5842
30" 610 24.00 - - 914 36.00 735 28.94 1285 50.6 - - - - 3312 130.4 710 28.0 2950 6504
32" 711 28.00 - - 965 38.00 779 30.69 1196 47.1 - - - - 3570 140.6 710 28.0 3500 7716
36" 813 32.00 - - 1016 40.00 874 34.44 1517 59.7 - - - - 3923 154.4 900 35.4 5400 11905
40" 914 36.00 - - - - 976 38.44 1680 66.1 - - - - 4323 170.2 900 35.4 6750 14881
aPI 6d tHroUGH CondUIt slab Gate ValVe
Model 81150
Model 81150/81300/81600/81900 dimensions and WeightsHand Wheel and bevel Gear operated
w w w . g w c i t a l i a . c o m
21
Class 300
dimensions
size rf rtJ bW b H HW (oPen) W HG (oPen) G WeIGHt
inch mm in mm in mm in mm in mm in mm in mm in mm in mm in kg lbs
2" 216 8.50 232 9.13 216 8.50 49 1.94 145 5.7 470 18.5 260 10.2 - - - - 54 119
3" 283 11.13 298 11.75 283 11.13 74 2.94 181 7.1 695 27.4 260 10.2 - - - - 85 187
4" 305 12.00 321 12.63 305 12.00 100 3.94 248 9.8 800 31.5 270 10.6 - - - - 110 243
6" 403 15.88 419 16.50 403 15.88 150 5.94 343 13.5 1089 42.9 450 17.7 - - - - 240 529
8" 419 16.50 435 17.13 419 16.50 201 7.94 388 15.3 1326 52.2 450 17.7 1326 52.2 1326 52.2 350 772
10" 457 18.00 473 18.63 457 18.00 252 9.94 505 19.9 1416 55.7 450 17.7 1416 55.7 1416 55.7 510 1124
12" 502 19.75 518 20.38 502 19.75 303 11.94 582 22.9 1647 64.8 610 24.0 1647 64.8 1647 64.8 750 1653
14" 762 30.00 778 30.63 762 30.00 334 13.19 642 25.3 1765 69.5 610 24.0 1765 69.5 1765 69.5 1050 2315
16" 838 33.00 854 33.63 838 33.00 385 15.19 728 28.7 2031 80.0 710 28.0 2031 80.0 2031 80.0 1460 3219
18" 914 36.00 930 36.63 914 36.00 436 17.19 800 31.5 - - - - 2305 90.7 2305 90.7 2050 4519
20" 991 39.00 1010 39.75 991 39.00 487 19.19 893 35.2 - - - - 2350 92.5 2350 92.5 2650 5842
24" 1143 45.00 1165 45.88 1143 45.00 589 23.19 1056 41.6 - - - - 2903 114.3 2903 114.3 4200 9259
28" 1346 53.00 1372 54.00 1346 53.00 684 26.94 1206 47.5 - - - - 3174 125.0 3174 125.0 5500 12125
30" 1397 55.00 1422 56.00 1397 55.00 735 28.94 1305 51.4 - - - - 3332 131.2 3332 131.2 6500 14330
32" 1524 60.00 1553 61.13 1524 60.00 779 30.69 1364 53.7 - - - - 3620 142.5 3620 142.5 7200 15873
36" 1727 68.00 1756 69.13 1727 68.00 874 34.44 1517 59.7 - - - - 3973 156.4 3973 156.4 8900 19621
dimensions
size rf rtJ bW b H HW (oPen) W HG (oPen) G WeIGHt
inch mm in mm in mm in mm in mm in mm in mm in mm in mm in kg lbs
2" 292 11.50 295 11.63 292 11.50 49 1.94 150 5.9 480 18.9 280 11.0 - - - - 65 143
3" 356 14.00 359 14.13 356 14.00 74 2.94 201 7.9 735 28.9 300 11.8 - - - - 110 243
4" 432 17.00 435 17.13 432 17.00 100 3.94 260 10.2 799 31.5 300 11.8 - - - - 150 331
6" 559 22.00 562 22.13 559 22.00 150 5.94 416 16.4 1263 49.7 450 17.7 - - - - 285 628
8" 660 26.00 664 26.13 660 26.00 201 7.94 455 17.9 1326 52.2 450 17.7 1326 52.2 300 11.8 650 1433
10" 787 31.00 791 31.13 787 31.00 252 9.94 520 20.5 1473 58.0 520 20.5 1473 58.0 300 11.8 900 1984
12" 838 33.00 841 33.13 838 33.00 303 11.94 600 23.6 1647 64.8 610 24.0 1647 64.8 400 15.7 1100 2425
14" 889 35.00 892 35.13 889 35.00 334 13.19 655 25.8 1820 71.7 710 28.0 1820 71.7 460 18.1 1700 3748
16" 991 39.00 994 39.13 991 39.00 385 15.19 749 29.5 2036 80.2 900 35.4 2036 80.2 460 18.1 2300 5071
18" 1092 43.00 1095 43.13 1092 43.00 436 17.19 830 32.7 - - - - 2305 90.7 610 24.0 2750 6063
20" 1194 47.00 1200 47.25 1194 47.00 487 19.19 903 35.6 - - - - 2400 94.5 610 24.0 4200 9259
24" 1397 55.00 1407 55.38 1397 55.00 589 23.19 1086 42.8 - - - - 2953 116.3 710 28.0 4950 10913
28" 1549 61.00 1562 61.50 1549 61.00 684 26.94 1226 48.3 - - - - 3374 132.8 710 28.0 8250 18188
30" 1651 65.00 1664 65.50 1651 65.00 735 28.94 1320 52.0 - - - - 3492 137.5 900 35.4 9500 20944
32" 1778 70.00 1794 70.63 1778 70.00 779 30.69 1384 54.5 - - - - 3670 144.5 900 35.4 11500 25353
36" 2083 82.00 2099 82.63 2083 82.00 874 34.44 1530 60.2 - - - - 4093 161.1 900 35.4 15500 34172
Class 900
dimensions
size rf rtJ bW b H HW (oPen) W HG (oPen) G WeIGHt
inch mm in mm in mm in mm in mm in mm in mm in mm in mm in kg lbs
2" 368 14.50 371 14.63 368 14.50 49 1.94 156 6.1 670 26.4 270 10.6 - - - - 90 198
3" 381 15.00 384 15.13 381 15.00 74 2.94 231 9.1 735 28.9 300 11.8 - - - - 162 357
4" 457 18.00 460 18.13 457 18.00 100 3.94 270 10.6 799 31.5 450 17.7 - - - - 285 628
6" 610 24.00 613 24.13 610 24.00 150 5.94 429 16.9 1343 52.9 500 19.7 - - - - 530 1168
8" 737 29.00 740 29.13 737 29.00 201 7.94 469 18.5 1326 52.2 500 19.7 1326 52.2 300 11.8 950 2094
10" 838 33.00 841 33.13 838 33.00 252 9.94 535 21.1 1573 61.9 610 24.0 1573 61.9 300 11.8 1300 2866
12" 965 38.00 968 38.13 965 38.00 303 11.94 615 24.2 - - - - 1667 65.6 460 18.1 1960 4321
14" 1029 40.50 1038 40.88 1029 40.50 322 12.69 670 26.4 - - - - 1820 71.7 460 18.1 2650 5842
16" 1130 44.50 1140 44.88 1130 44.50 373 14.69 769 30.3 - - - - 2176 85.7 500 19.7 3200 7055
18" 1219 48.00 1232 48.50 1219 48.00 423 16.69 890 35.0 - - - - 2247 88.5 610 24.0 4000 8818
20" 1321 52.00 1334 52.50 1321 52.00 471 18.56 923 36.3 - - - - 2501 98.5 610 24.0 5200 11464
24" 1549 61.00 1568 61.75 1549 61.00 570 22.44 1107 43.6 2970 116.9 710 28.0 9200 20283
Class 600
Model 81300
Model 81600
Model 81900
GWC ITALIA – Proven technology for individual valve solutions worldwide
22
aPI 6d tHroUGH CondUIt Parallel eXPandInG Gate ValVe
Class 300
dimensions
size rf rtJ bW b H HW W (double) HG G (double) Weight
inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch kg lbs
2" 216 8.50 232 9.13 216 8.50 49 1.94 145 5.7 470 18.5 260 10.2 - - - - 54 119
3" 283 11.13 298 11.75 283 11.13 74 2.94 181 7.1 695 27.4 260 10.2 - - - - 85 187
4" 305 12.00 321 12.63 305 12.00 100 3.94 248 9.8 800 31.5 300 11.8 - - - - 110 243
6" 403 15.88 419 16.50 403 15.88 150 5.94 343 13.5 1089 42.9 450 17.7 - - - - 240 529
8" 419 16.50 435 17.13 419 16.50 201 7.94 388 15.3 1326 52.2 500 19.7 1326 52.2 300 11.8 350 772
10" 457 18.00 473 18.63 457 18.00 252 9.94 505 19.9 1416 55.7 600 23.6 1416 55.7 450 17.7 510 1124
12" 502 19.75 518 20.38 502 19.75 303 11.94 582 22.9 1647 64.8 650 25.6 1647 64.8 600 23.6 750 1653
14" 762 30.00 778 30.63 762 30.00 334 13.19 642 25.3 1765 69.5 750 29.5 1765 69.5 600 23.6 1050 2315
16" 838 33.00 854 33.63 838 33.00 385 15.19 728 28.7 2031 80.0 - - 2031 80.0 650 25.6 1460 3219
18" 914 36.00 930 36.63 914 36.00 436 17.19 800 31.5 - - - - 2305 90.7 900 35.4 2050 4519
20" 991 39.00 1010 39.75 991 39.00 487 19.19 893 35.2 - - - - 2350 92.5 900 35.4 2650 5842
24" 1143 45.00 1165 45.88 1143 45.00 589 23.19 1056 41.6 - - 2903 114.3 900 35.4 4200 9259
28" 1346 53.00 1372 54.00 1346 53.00 684 26.94 1206 47.5 - - - - 3174 125.0 900 35.4 5500 12125
30" 1397 55.00 1422 56.00 1397 55.00 735 28.94 1305 51.4 - - - - 3332 131.2 900 35.4 6500 14330
32" 1524 60.00 1553 61.13 1524 60.00 779 30.69 1364 53.7 - - 3620 142.5 900 35.4 7200 15873
36" 1727 68.00 1756 69.13 1727 68.00 874 34.44 1517 59.7 - - - - 3973 156.4 900 35.4 8900 19621
Model 82300
Model 82300/82600/82900/821500/822500 dimensions and WeightsHand Wheel and bevel Gear operated
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23
Class 600
dimensions
size rf rtJ bW b H HW W (double) HG G (double) Weight
inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch kg lbs
2" 292 11.50 295 11.63 292 11.50 49 1.94 150 5.9 480 18.9 280 11.0 - - - - 65 143
3" 356 14.00 359 14.13 356 14.00 74 2.94 201 7.9 735 28.9 400 15.7 - - - - 110 243
4" 432 17.00 435 17.13 432 17.00 100 3.94 260 10.2 799 31.5 500 19.7 - - - - 150 331
6" 559 22.00 562 22.13 559 22.00 150 5.94 416 16.4 1263 49.7 560 22.0 - - - - 285 628
8" 660 26.00 664 26.13 660 26.00 201 7.94 455 17.9 1326 52.2 700 27.6 1326 52.2 300 11.8 650 1433
10" 787 31.00 791 31.13 787 31.00 252 9.94 520 20.5 1473 58.0 750 29.5 1473 58.0 450 17.7 900 1984
12" 838 33.00 841 33.13 838 33.00 303 11.94 600 23.6 1647 64.8 - 1647 64.8 610 24.0 1100 2425
14" 889 35.00 892 35.13 889 35.00 334 13.19 655 25.8 1820 71.7 - 1820 71.7 610 24.0 1700 3748
16" 991 39.00 994 39.13 991 39.00 385 15.19 749 29.5 2036 80.2 - - 2036 80.2 710 28.0 2300 5071
18" 1092 43.00 1095 43.13 1092 43.00 436 17.19 830 32.7 - - - - 2305 90.7 900 35.4 2750 6063
20" 1194 47.00 1200 47.25 1194 47.00 487 19.19 903 35.6 - - - - 2400 94.5 900 35.4 4200 9259
24" 1397 55.00 1407 55.38 1397 55.00 589 23.19 1086 42.8 - - - 2953 116.3 900 35.4 4950 10913
28" 1549 61.00 1562 61.50 1549 61.00 684 26.94 1226 48.3 - - - - 3374 132.8 900 35.4 8250 18188
30" 1651 65.00 1664 65.50 1651 65.00 735 28.94 1320 52.0 - - - - 3492 137.5 900 35.4 9500 20944
32" 1778 70.00 1794 70.63 1778 70.00 779 30.69 1384 54.5 - - - 3670 144.5 900 35.4 11500 25353
36" 2083 82.00 2099 82.63 2083 82.00 874 34.44 1530 60.2 - - - - 4093 161.1 900 35.4 15500 34172
Model 82600
Class 900
dimensions
size rf rtJ bW b H HW W (double) HG G (double) Weight
inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch kg lbs
2" 368 14.50 371 14.63 368 14.50 49 1.94 156 6.1 670 26.4 270 10.6 - - - - 90 198
3" 381 15.00 384 15.13 381 15.00 74 2.94 231 9.1 735 28.9 400 15.7 - - - - 162 357
4" 457 18.00 460 18.13 457 18.00 100 3.94 270 10.6 799 31.5 500 19.7 - - - - 285 628
6" 610 24.00 613 24.13 610 24.00 150 5.94 429 16.9 1343 52.9 560 22.0 - - - - 530 1168
8" 737 29.00 740 29.13 737 29.00 201 7.94 469 18.5 1326 52.2 750 29.5 1326 52.2 305 12.0 950 2094
10" 838 33.00 841 33.13 838 33.00 252 9.94 535 21.1 1573 61.9 750 29.5 1573 61.9 460 18.1 1300 2866
12" 965 38.00 968 38.13 965 38.00 303 11.94 615 24.2 - - 1667 65.6 610 24.0 1960 4321
14" 1029 40.50 1038 40.88 1029 40.50 322 12.69 670 26.4 - - 1820 71.7 710 28.0 2650 5842
16" 1130 44.50 1140 44.88 1130 44.50 373 14.69 769 30.3 - - - 2176 85.7 900 35.4 3200 7055
18" 1219 48.00 1232 48.50 1219 48.00 423 16.69 890 35.0 - - - - 2247 88.5 900 35.4 4000 8818
20" 1321 52.00 1334 52.50 1321 52.00 471 18.56 923 36.3 - - - - 2501 98.5 900 35.4 5200 11464
24" 1549 61.00 1568 61.75 1549 61.00 570 22.44 1107 43.6 - - - 2970 116.9 900 35.4 9200 20283
Model 82900
GWC ITALIA – Proven technology for individual valve solutions worldwide
24
Class 2500
dimensions
size rf rtJ bW b H HW W (double) HG G (double) Weight
inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch kg lbs
2" 451 17.75 454 17.88 451 17.75 42 1.69 165 6.5 715 28.1 400 15.7 - - - - 180 397
3" 578 22.75 584 23.00 578 22.75 62 2.44 212 8.3 810 31.9 500 19.7 - - - - 350 772
4" 673 26.50 683 26.88 673 26.50 87 3.44 265 10.4 895 35.2 800 31.5 930 - 610 - 550 1213
6" 914 36.00 927 36.50 914 36.00 131 5.19 380 15.0 - - - - 1365 - 610 - 1420 3131
8" 1022 40.25 1038 40.88 1022 40.25 179 7.06 480 18.9 - - - - 1485 58.5 610 24.0 2340 5159
10" 1270 50.00 1292 50.88 1270 50.00 223 8.81 580 22.8 - - - - 1785 70.3 610 24.0 4100 9039
12" 1422 56.00 1445 56.88 1422 56.00 265 10.44 680 26.8 - - - - 1980 78.0 610 24.0 5850 12897
Model 822500
Class 1500
dimensions
size rf rtJ bW b H HW W (double) HG G (double) Weight
inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch kg lbs
2" 368 14.50 371 14.63 368 14.50 49 1.94 160 6.3 680 26.8 400 15.7 - - - - 120 265
3" 470 18.50 473 18.63 470 18.50 74 2.94 202 8.0 785 30.9 500 19.7 - - - - 250 551
4" 546 21.50 549 21.63 546 21.50 100 3.94 286 11.3 850 33.5 600 23.6 - - - - 385 849
6" 705 27.75 711 28.00 705 27.75 144 5.69 380 15.0 1170 46.1 800 31.5 1380 - 610 - 925 2039
8" 832 32.75 841 33.13 832 32.75 192 7.56 485 19.1 - - - - 1520 59.8 710 28.0 1520 3351
10" 991 39.00 1000 39.38 991 39.00 239 9.44 610 24.0 - - - - 1765 69.5 710 28.0 2300 5071
12" 1130 44.50 1146 45.13 1130 44.50 287 11.31 710 28.0 - - - - 1825 71.9 900 35.4 3200 7055
14" 1257 49.50 1276 50.25 1257 49.50 315 12.44 790 31.1 - - - - 2145 84.4 900 35.4 4500 9921
16" 1384 54.50 1407 55.38 1384 54.50 360 14.19 890 35.0 - - - - 2387 94.0 900 35.4 5900 13007
18" 1537 60.50 1559 61.38 1537 60.50 406 16.00 990 39.0 - - - - 3365 132.5 900 35.4 7500 16535
20" 1664 65.50 1686 66.38 1664 65.50 454 17.88 1090 42.9 - - - - 3580 140.9 900 35.4 10500 23149
24" 1943 76.50 1972 77.63 1943 76.50 546 21.50 1270 50.0 - - - 3970 156.3 900 35.4 16500 36376
Model 821500
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25
ValVe sIZeInCH Class 150 Class 300 Class 600 Class 900 Class 1500 Class 2500
2 482 482 482 482 437 258
2.5 740 740 740 728 678 355
3 1085 1085 1085 1072 986 514
4 2136 2136 2136 1890 1760 735
6 5230 5230 5230 4383 3722 2710
8 9054 9054 9054 8416 7279 5527
10 14856 14856 14856 14087 12283 8513
12 22150 22150 22150 21025 17843 13282
14 27883 27883 27883 25846 21336 -
16 38224 38224 38224 35358 29548 -
18 51740 51740 51740 46004 - -
20 70386 70386 70386 62871 - -
22 86869 86869 86869 - - -
24 116835 116835 116835 - - -
26 123222 123222 123222 - - -
30 210229 210229 210229 - - -
32 257251 257251 257251 - - -
36 325362 325362 325362 - - -
42 431050 431050 431050 - - -
Cv is a number measured in gallons/minute, which is calculated from the flow of water through the valve with a 1 psi pressure drop across the valve length.
flow Characteristics – Close to openThe graph depicts the approximate percentage of the flow coefficient (Cv) as the valve is stroked from the closed to open position.
floW CoeffICIents (Cv) ValUe
GWC ITALIA – Proven technology for individual valve solutions worldwide
26
NOTES
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27
NOTES
uSA HEADQuARTERS GWC USA, Inc.4301 Yeager WayBakersfield,California 93313 - USAph: 661-834-1775fax: 661-834-2072
www.gwcitalia.com
WORLDWIDE HEADQuARTERSGWC Italia SpAVia A. Grandi, 520056 Trezzo Sull’AddaMilano, Italyph: 39-02-86882941fax: 39-02-86882942