STRAINER SELECTION CHART Strainer Selection · PDF filetable of contents automatic filter & strainer selection ... consult chemical handbook. ... model cs simplex strainer vessels

2 3RAM LIQUID FILTRATION PRODUCT CATALOGUE 1.844.726.3458 | [email protected]

TABLE OF CONTENTS AUTOMATIC FILTER & STRAINER SELECTION

AUTOMATIC FILTER & STRAINER SELECTION PG. 3

FI SERIES SINGLE BAG FILTER HOUSINGS PG. 4

FI MULTI BAG FILTER HOUSINGS PG. 6

MODEL CS SIMPLEX STRAINERS VESSELS PG. 8

MODEL CD DUPLEX STRAINER VESSELS PG. 10

MODEL ACM SELF-CLEANING AUTOMATIC STRAINER 4” – 18” PG. 12

MODEL ACS AUTOMATIC STRAINER 20” – 60” PG. 14

AUTOMATIC FILTER MODEL FAFI & FAFX PG. 20

Strainer Selection Chart Degree of Filtration

Pipeline Pressure Limits

Pipeline Temperature Limits

Pressure

Temperature

Vibration and Shock

Corrosion

Flow May Be Interrupted

Manual Basket Cleaning

Flow May Not Be Interrupted

Manual Basket Cleaning

Flow May Not Be Interrupted

Automatic Basket Cleaning

Pipeline Size

Allowable Pressure Drop

Screen Opening Size

Strainer Rating

Material of Construction

Type of Strainer

Simplex

Duplex

Self-‐Cleaning

Size of Strainer

All units available in Carbon Steel, Stainless and Alloys. Dimensions are general, all information to be confirmed with design drawing.

STRAINER SELECTION CHART


RAM filter bag vessels are designed for industrial service. Single bag units are ideal for batch service or when flow interruption is possible. Four standard sized vessels handle various rates of flow and service. Industry standard filter bag sizes of LFB1, LFB2, P1S and P2S are used and also available from RAM Liquid Filtration. Consult the filter model table to determine applicable housing size based on flow rate.

The RAM duplex model FI-400 is suitable for a maximum flow rate of 360 GPM, above this see multi-filter housings.

With any of RAM’s single bag unit designs, manifolds can be added to accommodate two or more housings. Manifolding of two or more units allows for continuous flow while one of the bag chambers is taken off line for filter change out.

All vessels are equipped with quick opening covers to facilitate quick and seamless bag change out. Housings come standard with #10 wire mesh basket to support the filter bag. Housings are designed to produce a low pressure drop and provide the greatest efficiency and life of filter bags.

SPECIFICATIONS:• Quick opening hinged cover with handle• Carbon steel, 304L/316L stainless steel• All closure hardware• Vent and gauge connections• Legs or mounting bracket• EPDM or BUNA N seals

OPTIONS:• Displacement float• Alternate material of construction• Magnetic post inserts• Viton or teflon seals• Polished finish for clean service

FI SERIES SINGLE BAG FILTER HOUSINGS FI MULTI BAG FILTER HOUSINGS

Multi bag housings provide the optimal solution for high flow rates or heavier solid load. Each multi bag housing contains a series of #10 wire mesh baskets to support individual filter bags. The wire mesh basket offers tremendous integrity while providing the highest open area keeping pressure loss to a minimum.

Typical applications include cooling water, plant effluents and many high volume liquid products.

Not limited with filter area the multi bag housing is ideal for both heavy solid load applications and higher viscosity liquids.

SPECIFICATIONS:• Quick opening cover with lifting davit• Carbon steel, 304L/316L stainless steel• All closure hardware• Vent and gauge connections• Legs or mounting saddle• EPDM or BUNA N seals

OPTIONS:• Displacement floats• Alternate material of construction• Magnetic post inserts• Viton or teflon seals• Wedge-wire baskets

FILTER MATERIAL COMPATIBILITYFor recommendations on which bag or filter housing material to use, contact RAM Liquid Filtration.

FLOW RATE – PRESSURE DROP DATAFor complete technical data or pressure drop and how to size RAM Bag Filters, contact RAM Liquid Filtration.

Information for sales reference only is subject to change without notice.


FLOW RATE FOR NO. 1 SIZE FILTER BAGS AT A GIVEN VISCOSITY AT 1.0 PSI P

FI MULTI BAG FILTER HOUSINGS

TO USE THE CHART1. Select micron rated bags at bottom of chart. 2. Follow the vertical line up until it intersects

with the selected viscosity in centipoise. 3. Cross at right angles to left hand ordinate,

which will indicate the flow rate at 1 psi pressure drop.

4. When centipoise lines run off at 80 gpm, DP is less than 1 psi pressure drop. NOTE: (A) For flow rates higher than chart - divide desired flow by flow given in chart to obtain resultant DP. (B) For #2 size bags - multiply results by 2. (C) For LFB-1 size bags - divide results by 4. (D) For LFB-2 size bags - divide results by 2.

CONVERSION FORMULA Viscosity Units x Factor* x Specific Gravity / 5.62 = Absolute Viscosity (centipoises)

VISCOSITY UNITS @ 70°F FACTORSaybolt Furol 10.0 Redwood Standard 1.095 Redwood Admiralty 10.87 Engler 34.5 Parlin Cup #15 98.2 Parlin Cup #2 187.0 Ford Cup #4 17.4 MacMichael 1.92 Demmler #10 146.0 Demmler # 14.6 Stormer (approx.) 13 Staybolt Seconds Universal 1.0

*The Conversion Formula is approximately valid when the numerator is greater than 250. For other values, consult Chemical Handbook.

GA1 GA2

0.1

1

10

1 10

100

Flow

Rate (gpm

/bag

/1.0 P.S.I.)

Bag Micron Rating

Flow Rate for No. 1 Size Filter Bags at a Given Viscosity at

1.0 PSI ∆P

Values in the graph are used as a reference only.

20 30 40 50 60 100 200 400 600

800 1000

1500

2000

4000

6000

8000 10000

0.3

0.5

3

5

30

50

80

3 5 30

50

300

500

FILTER MATERIAL COMPATIBILITYFor recommendations on which bag or filter housing material to use contact us at: 1.844.726.3458 or [email protected]

FLOW RATE – PRESSURE DROP DATAContact us for complete technical data or pressure drop and how to size RAM bag filters.Information for sales reference only is subject to change without notice.

FI MUTLI BAG DRAWINGS


Dimensions are general, all information to be confirmed with design drawing.

Model # of Filter Bags

Bag Size Code

Inlet / Outlet Size

Recommended Max Flow Rate

Dimensional Drawing

A B C D E F G&H I J

FI-‐25 1 LFB-‐1 1" 25 GA 1 10 1/2" 10 3/4" 5 1/2" 6 1/4" 4 1/2" * * * * FI-‐50 1 LFB-‐2 1 1/2" 50 GA 1 10 1/2" 16 1/2" 11" 7 1/2" 4 1/2" * * * * FI-‐100 1 P1S 2" 80 GA 1 16 7/8" 27" 16 3/4" 13" 8 5/8" * * * * FI-‐200 1 P2S 2" or 3" 160 GA 1 16 7/8" 39 1/2" 29 3/4" 13" 8 5/8" * * * * FI-‐400 2 P2S 4" 320 GA 1 16 7/8" 39 1/2" 29 3/4" 13" 8 5/8" * * * * FI-‐600 3 P2S To Spec 480 GA 1 69" 51.5" 19" 21" 7.5" 26" 3:06 2" 16.5" FI-‐800 4 P2S To Spec 640 GA 2 69" 51.5" 19" 21" 8" 26" 4:08 2" 16.5" FI-‐1000 5 P2S To Spec 800 GA 2 69" 51.5" 19" 21" 8" 26" 4:08 2" 16.5" FI-‐1200 6 P2S To Spec 960 GA 2 70" 52" 20" 21.5" 8" 26" 6:08 2" 18" FI-‐1400 7 P2S To Spec 1120 GA 2 71" 52.5" 21" 22" 8" 28" 6:08 2" 20" FI-‐1600 8 P2S To Spec 1280 GA 2 73" 53.5" 22.5" 23" 9.5" 30" 8:10 2" 22" FI-‐1800 9 P2S To Spec 1440 GA 2 75" 54.5" 24.5" 24" 9.5" 32" 8:10 2" 23.5" FI-‐2000 10 P2S To Spec 1600 GA 2 75" 54.5" 24.5" 24" 9.5" 34" 8:10 2" 25" FI-‐2200 11 P2S To Spec 1760 GA 2 77" 55" 27.5" 24.5" 9.5" 38" 8:10 2" 25.5" FI-‐2400 12 P2S To Spec 1920 GA 2 77" 55" 27.5" 24.5" 9.5" 40" 8:10 2" 27" FI-‐2600 13 P2S To Spec 2080 GA 2 83" 60.5" 28" 27.5" 11" 42" 8:10 2" 27" FI-‐2800 14 P2S To Spec 2240 GA 2 83" 60.5" 28" 27.5" 12" 44" 8:10 2" 29.75" FI-‐3000 15 P2S To Spec 2400 GA 2 85" 61" 28" 28" 12" 44" 10:12 2" 29.75" FI-‐3200 16 P2S To Spec 2560 GA 2 85" 61" 28" 28" 12" 46" 10:12 2" 31.25" FI-‐3400 17 P2S To Spec 2720 GA 2 85" 61" 28" 28" 12" 46" 10:12 2" 31.25" FI-‐3600 18 P2S To Spec 2880 GA 2 85" 61" 28" 28" 12" 46" 10:12 2" 31.25" FI-‐3800 19 P2S To Spec 3040 GA 2 85" 61" 28" 28" 12" 46" 10:12 2" 31.25" FI-‐4000 20 P2S To Spec 3200 GA 2 85" 61" 28" 28" 13" 48" 10:12 2" 31.25" FI-‐4200 21 P2S To Spec 3360 GA 2 87" 62" 29" 29" 13" 48" 10:14 2" 31.25" FI-‐4400 22 P2S To Spec 3520 GA 2 88" 62.5" 29.5" 29.5" 13" 50" 10:14 2" 34" FI-‐4600 23 P2S To Spec 3680 GA 2 88" 62.5" 29.5" 29.5" 13" 50" 10:14 2" 34" FI-‐4800 24 P2S To Spec 3840 GA 2 89" 62.5" 29.5" 29.5" 13" 52" 10:14 2" 35.5" FI-‐5000 25 P2S To Spec 4000 GA 2 92" 64" 36" 32" 13" 54" 10:14 2" 36"

Model # of Filter Bags

Bag Size Code

Inlet / Outlet Size

Recommended Max Flow Rate

Dimensional Drawing

A B C D E F G&H I J

FI-‐25 1 LFB-‐1 1" 25 GA 1 10 1/2" 10 3/4" 5 1/2" 6 1/4" 4 1/2" * * * * FI-‐50 1 LFB-‐2 1 1/2" 50 GA 1 10 1/2" 16 1/2" 11" 7 1/2" 4 1/2" * * * * FI-‐100 1 P1S 2" 80 GA 1 16 7/8" 27" 16 3/4" 13" 8 5/8" * * * * FI-‐200 1 P2S 2" or 3" 160 GA 1 16 7/8" 39 1/2" 29 3/4" 13" 8 5/8" * * * * FI-‐400 2 P2S 4" 320 GA 1 16 7/8" 39 1/2" 29 3/4" 13" 8 5/8" * * * * FI-‐600 3 P2S To Spec 480 GA 1 69" 51.5" 19" 21" 7.5" 26" 3:06 2" 16.5" FI-‐800 4 P2S To Spec 640 GA 2 69" 51.5" 19" 21" 8" 26" 4:08 2" 16.5" FI-‐1000 5 P2S To Spec 800 GA 2 69" 51.5" 19" 21" 8" 26" 4:08 2" 16.5" FI-‐1200 6 P2S To Spec 960 GA 2 70" 52" 20" 21.5" 8" 26" 6:08 2" 18" FI-‐1400 7 P2S To Spec 1120 GA 2 71" 52.5" 21" 22" 8" 28" 6:08 2" 20" FI-‐1600 8 P2S To Spec 1280 GA 2 73" 53.5" 22.5" 23" 9.5" 30" 8:10 2" 22" FI-‐1800 9 P2S To Spec 1440 GA 2 75" 54.5" 24.5" 24" 9.5" 32" 8:10 2" 23.5" FI-‐2000 10 P2S To Spec 1600 GA 2 75" 54.5" 24.5" 24" 9.5" 34" 8:10 2" 25" FI-‐2200 11 P2S To Spec 1760 GA 2 77" 55" 27.5" 24.5" 9.5" 38" 8:10 2" 25.5" FI-‐2400 12 P2S To Spec 1920 GA 2 77" 55" 27.5" 24.5" 9.5" 40" 8:10 2" 27" FI-‐2600 13 P2S To Spec 2080 GA 2 83" 60.5" 28" 27.5" 11" 42" 8:10 2" 27" FI-‐2800 14 P2S To Spec 2240 GA 2 83" 60.5" 28" 27.5" 12" 44" 8:10 2" 29.75" FI-‐3000 15 P2S To Spec 2400 GA 2 85" 61" 28" 28" 12" 44" 10:12 2" 29.75" FI-‐3200 16 P2S To Spec 2560 GA 2 85" 61" 28" 28" 12" 46" 10:12 2" 31.25" FI-‐3400 17 P2S To Spec 2720 GA 2 85" 61" 28" 28" 12" 46" 10:12 2" 31.25" FI-‐3600 18 P2S To Spec 2880 GA 2 85" 61" 28" 28" 12" 46" 10:12 2" 31.25" FI-‐3800 19 P2S To Spec 3040 GA 2 85" 61" 28" 28" 12" 46" 10:12 2" 31.25" FI-‐4000 20 P2S To Spec 3200 GA 2 85" 61" 28" 28" 13" 48" 10:12 2" 31.25" FI-‐4200 21 P2S To Spec 3360 GA 2 87" 62" 29" 29" 13" 48" 10:14 2" 31.25" FI-‐4400 22 P2S To Spec 3520 GA 2 88" 62.5" 29.5" 29.5" 13" 50" 10:14 2" 34" FI-‐4600 23 P2S To Spec 3680 GA 2 88" 62.5" 29.5" 29.5" 13" 50" 10:14 2" 34" FI-‐4800 24 P2S To Spec 3840 GA 2 89" 62.5" 29.5" 29.5" 13" 52" 10:14 2" 35.5" FI-‐5000 25 P2S To Spec 4000 GA 2 92" 64" 36" 32" 13" 54" 10:14 2" 36"


MODEL CS SIMPLEX STRAINER VESSELS MODEL CS SIMPLEX STRAINER VESSELS

RAM Liquid Filtration model CS is a fabricated single element strainer vessel. Inlet and outlet connections are on the same plane allowing for in-line pipe installation. Designed to be taken off-line for basket clean out the CS is ideal for batch operations. The CS can handle high solid loads and higher viscosity liquids than smaller tee style strainers. The CS is offered in both bolted cover and quick opening designs. At the heart of the CS is a wedge wire straining element. This basket material has the highest open area percentage which allows for improved straining efficiency and longer run times between basket clean outs.

SPECIFICATIONS:• Inlet and outlet are standard ANSI 150# • Carbon steel, 304L/316L stainless steel

are standards• Legs and/or support saddle

OPTIONS:• Open bottom basket for manual blow down

of basket• Off set connections with flat top basket flange• Cover lifting davit• Special alloy construction• High pressure / temperature design• Jacketing or heat tracing• Special coating and lining available

0.1

1

10

100

1000

10000

100000

Pres

sure

Dro

p P.

S.I.

Flow Rate (Water) G.P.M. (0.032" Slot Opening and Larger)

Pressure Drop Curves for CS 3” 4” 5” 6” 8” 10” 12”

”” 14” 16” 18” 20” 24”


500

5000

50000

300

3000

30000

0.3

0.5

5

3

A

C

D

E

F

G

Clearance for

Basket Removal

Dia

Dia

H NPT

DRAIN

A

C

D

E

F

G

Clearance for

Basket Removal

Dia

Dia

H NPT

DRAIN

B

VISCOSITY CORRECTION FACTORS1. Multiply the pressure drop for water by the specific gravity of liquid.2. Multiply the result by the correction factor for the more viscous liquid.

CORRECTION FACTORS (BASKET SLOT OPENINGS) (Water) (smaller than 0.032”). Multiply the pressure drop from the chart by the following factors:

PRESSURE DROP CURVES


Water has a viscosity of 30 SSU. Dimensions are general, all information to be confirmed with design drawing.


Model CD is a duplexed arrangement of two indi-vidual straining chambers. A valve assembly allows either of the chambers to be isolated for cleaning while the opposite chamber maintains system flow. At the heart of the CD strainer are two wedge wire straining elements. This basket material has the highest open area percentage which allows for improved straining efficiency.

SPECIFICATIONS:• Inlet and outlet are standard ANSI 150#• Standard carbon steel, 304L/316L stainless steel• Legs and/or support saddle

OPTIONS:• Open bottom basket for manual blow down

of basket• Off set connections with flat top basket flange• Cover lifting davit• Special alloy construction• High pressure / temperature design• Jacketing or heat tracing• Special coatings and lining are available

STANDARD MATERIALSBODY: Carbon Steel or Stainless SteelBASKET: 304 Stainless SteelVALVES: Butterfly with ductile iron body ductile iron and stainless steel disc

CORRECTION FACTORS (BASKET SLOT OPENINGS) (Water) (smaller than 0.032”). Multiply the pressure drop from the chart by the following factors:

MODEL CD DUPLEX STRAINER VESSELS MODEL CD DUPLEX STRAINER VESSELS

AB

C

E

D

F

G



DIMENSIONAL CHART (APPROX. IN INCHES)


VISCOSITY CORRECTION FACTORS1. Multiply the pressure drop for water by the specific gravity of liquid.2. Multiply the result by the correction factor for the more viscous liquid.

0.1

1

10

100

1000

10000

100000

Pres

sure

Dro

p P.

S.I.

Flow Rate (Water) G.P.M. (0.032" Slot Opening and Larger)

Pressure Drop Curves for CS 3” 4” 5” 6” 8” 10” 12”

”” 14” 16” 18” 20” 24”


500

5000

50000

300

3000

30000

0.3

0.5

5

3


The model ACM self-cleaning strainer provides a highly efficient and reliable means of removing solids from process fluids. A cluster of wedge-wire easy clean straining elements provides positive straining. The exclusive easy clean straining elements are designed with a unique “V” shape to promote free flow of the incoming liquid and to discourage wedging of any particles. Normal flow is from the inside to the outside of the straining elements and backwashing is accomplished by the reversal of the flow through the elements. The easy clean straining elements are arranged to accumulate debris on the inside. A rotating arm which is vented to the atmosphere isolates each easy clean element for cleaning. Cleaning is accomplished by taking advantage of the system pressure and the use of a small portion of the system flow. When an element is isolated, an effective backwashing action is created without disturbing total flow. Accumulated debris is flushed out of the easy clean element through the backwashing arm and into the drain.

The model ACM self-cleaning strainer can be ordered with either continuous backwashing or with the addition of a variety of optional control packages for intermittent backwashing. The model ACM self-cleaning strainers are capable of handling flow rates up to 32,000 USGPM and straining as fine as 0.001” or 25 micron.

TYPICAL STRAINER SPECIFICATION• Self cleaning strainer• Process liquid fluid type • Flow rate in GPM• Allowable clean pressure drop• Operating pressure and temperature• Design pressure and temperature• Strainer body material of construction• Wedge wire element material of construction• Slot opening in element/straining size• Inlet and outlet connection type and size• Electrical requirements (automatic only)

MODEL ACM SELF-CLEANING AUTOMATIC STRAINER MODEL ACM SELF-CLEANING AUTOMATIC STRAINER

0.1

1.0

10

100

1000

10000

Pres

sure

Dro

p P.S.I.

Flow Rate (Water) G.P.M. (1/32" Slot Opening)

Pressure Drop Curves for ACM 4” 6” 8” 10” 12” 14” 16” 18”

30

50

300

500

3000

5000

0.3

0.5

3.0

5.0


BACKWASH SHOE

FILTER ELEMENTS

BACKWASH ARM

DETAIL OF BACKWASH ARM

BACKWASH SHOE

DIMENSIONS (APPROX. 150 PSI)

PRESSURE DROP CURVEL

L

M DIA.

D

C

E

B

G

F

H

J

K - DRAIN

CONNECTION

BACKWASH

INSPECTION

PORT

INLET

OUTLET

A

INLET OUTLET

Values in the graph are used as a reference only. Dimensions are general, all information to be confirmed with design drawing.

STANDARD MATERIALSStandard construction is carbon steel internal epoxy coated and stainless steel, all grades.

STANDARD FEATURES• Low initial cost• Intermittent or continuous backwashing

• Stainless steel backwash assembly guided by maintenance-free marine-type cutless bearings

• Easy clean reverse wound wedge-wire• Continuous flow during backwashing• Low backwashing flow requirements• TEFC Motor 110/220V, single phase, 50/60 Hz

OPTIONS• Other materials available, including monel

and SMO 254 • Eductor pump for low pressure service• Horizontal configuration


MODEL ACM DESIGN, FEATURES & OPERATION MODEL ACM EASY CLEAN ELEMENTS

Model ACM is offered for either horizontal or vertical installation and is available to strain as fine as 0.001” degree of cleaning using RAM’s own easy clean elements. The ACM has a larger screen area, providing more filtering surface than any other same size automatic strainer in the marketplace, equating a higher filter open area to inlet area ratio; this allows longer straining cycles and less backwash disposal and electrical usage. The ACM strainer is a fabricated, single body vessel with multiple straining elements. It was designed as a fully automatic self-cleaning strainer. The vessel is available fabricated to ASME Code latest edition and addenda (“U” stamped) and National Board Registered, or built in general accordance to ASME Code without code stamp or registration. In Canada, it is available also with “CRN” registration as required by provincial codes.

Inlet and outlet connections are on the sides. The debris laden fluid enters the large lower chamber where it slows down and heavier contaminants settle to the bottom. The fluid flows upward into the straining elements. The fluid then passes through the screen media and exits the strainer through the outlet nozzle. Contaminants gather on the inside of the straining elements.

The ACM strainer can perform self-cleaning (backwashing) without interruption of flow. These strainers are designed for liquid service where large quantities of debris must be removed. The ACM strainer uses a motor driven backwash arm to clean the straining elements. The strainer is backwashed

by starting the backwash drive and opening the backwash drain valve. This backwashing reverses the flow through each straining element sequentially. The backwash assembly is rotated to cover one element hole in the tube sheet opening a flow path to the outside via the backwash drain. The strainer utilizes system pressure and a percentage of system flow to backwash the straining elements. The controls to accomplish this can be as simple as a toggle switch to start and stop the backwash drive motor and a manual gate or ball valve to control the system backwash flow.

The ACM straining element is a cylindrical, reverse wound and resistance welded wedge-wire tube easy clean that is closed at one end and open at the other. Flow during straining is from the inside to the outside of this straining element. Flow direction for backwashing, however, is opposite. The straining elements are constructed for easy replacement. They are held in place with hold down rings or plates, bolted to hold down rods. The backwash arms provide a flow path for the debris collected and the fluid to dislodge the debris during the backwash cycle. The backwash arm directs the dirty fluid to a drain or alternate collection device at atmospheric pressure outside of the strainer. The arm is slowly rotated to allow each straining element to be backwashed during a revolution. Each straining element is isolated by a backwash shoe.

The backwash drive system converts the high rotational speed motion of the electric motor to a low rotational speed so as to more effectively backwash the straining element. A shear pin protects the gear reducer, shafting and backwash arm. The backwash system consists of the backwash arms, the backwash shoes and piping that allows the backwash fluid to exit the strainer to an open or low pressure dirty outlet connection.

RAM wedge-wire screens are designed to give maximum open area and deliver top performance in any screening application. Every step of production from raw material, wire shaping, screen winding to finished product is done under the same roof, ensuring the quality of the most vital part of any liquid or solid separation strainer filter element.

The easy clean straining elements manufactured by RAM are available in reverse wrapped configuration from 0.001” (25 micron) to 0.500” (12,500 micron). RAM easy clean straining elements are designed to give maximum open area and to deliver top performance in any straining or filtering application.

Easy clean elements discourage wedging of particles by helical wrapping of vertical rods with a “V” shaped profile wire. All internal vertical rods are welded to the surface wire at every intersection. The vertical rods being rigidly welded give a smooth unobstructed surface and do not impede the free flow of materials across the easy clean element. This forms a continuous slot which limits the contact of particles to two points in the screen slot and prevents plugging and avoids the stapling effect inherent with other filter media. In this way, the optimum efficiency is assured by maintaining the maximum effective flow area.

OPTIONAL CONTROLS A) NEMA 4 (water and dust tight) control box, complete with solid state adjustable timers• Backwash drive motor starter• Indicator lights to indicate power on and

unit flushing

• H.O.A. (Hands-Off-Auto) selector switch, permits changing from normal intermittent (differential operation) to continuous back-flushing

• Internally adjustable backwash timer for manual back-flush cycle start, recycle timer

• Differential pressure switch• Full port ball valve complete with actuator,

electric actuation

B) Same as A) except the NEMA 4 control box is supplied with an input supply transformer for use at 220-480V, single phase, 50/60 Hz.

C) Other as specified by specification or customer (example; control boxes NEMA 4X, 7, or 9, external alarm connection, pneumatic actuation, special wiring, specific brand components).

MODEL ACM CONTROL SYSTEMS Every ACM strainer is shipped completely assembled, ready to operate. A single 1/3 H.P. motor drives the backwash mechanism of the largest strainer size. The automatic backwash controls (if required) actuate the backwash cycle.

RAM automatic controls are engineered and designed to allow for optimal performance and ease of operation. They are factory set and field adjustable so as to provide for a minimal loss of backwash liquid and provide total cleaning of the easy clean elements. Where the loss of backwash liquid or solids is critical, RAM provides the model ACM.

APPLICATION AND INDUSTRIAL USES ACM strainers are designed for removal of suspended particulate from all types of liquids, used in practically all industries for quenching, lubrication, spraying, cooling, descaling, pump, valve, heat exchanger and spray nozzle protection. Liquids filtered include well/lake, river, cooling tower or sea (salt water) to white water, black liquor (pulp and paper mills), chemicals, sewage and lubricating oils.



0.1

1.0

1000

10000

100000

Pressure Drop P.S.I.

Flow Rate (Water) G.P.M. (1/8" Slot)

Pressure Drop Curves for ACS 20”””

24” 30”


5000

50000

3000

30000

5.0 42” 36”

3.0

0.3

0.5

5.0

3.0

0.3


MODEL ACS AUTOMATIC STRAINER MODEL ACS AUTOMATIC STRAINER

The model ACS is a custom fabricated self-cleaning strainer designed for continuous back-flush operation. Featuring a fabricated backwash arm and a single, replaceable element wedge-wire basket -both of stainless steel construction – the model ACS is designed to be unattended for extended periods of time. The large amount of open area allows intermittent back-flush operation, thereby minimizing both operating costs and backwash effluent.

The wedge-wire element features a reverse groove design that prevents lodging of debris in the element and creates a vortex during back-flush for a more efficient back-flush operation. The model ACS can be constructed from a variety of materials - from

carbon steel to stainless steel to exotic alloys - or can be coated internally with fusion bonded epoxy finish, allowing it to handle any fluid. For a truly customizable strainer that can be designed for any application or budget, the ACS is the only choice.

OPTIONAL AND STANDARD FEATURES• Standard construction is carbon steel epoxy

lined, available in stainless steel all grades, monel, SMO 254.

• Elements are standard as 304 stainless steel. All other materials are available.

• Standard unit complete with gear reducer and drive motor for continuous back-flushing.

• The standard TEFC motor is 110/220V, single phase, 50/60 Hz.

DIMENSIONS (APPROX.) 150PSIG

INLETOUTLET

A

B

PRESSURE CONNECTIONS

DRAIN / BLOWDOWN

OUTLET DRAIN

MOTOR WITH GEAR REDUCER

D - MIN SPACE

HEAD/BASKET

REMOVAL

C

H

OPTIONAL SPACE FOR

CONROL PANEL & DIFF.

PRESSURE SWITCH MOUNTING

BACKWASH

E

F

INSPECTION

PORT

A A


SECTION A-A

4X J

4X 45 DEG. 4X L X L PAD

4X DIA. K THRU

SECTION A-A

4X J

4X 45 DEG. 4X L X L PAD

4X DIA. K THRU


MODEL ACS EASY CLEAN ELEMENTS

RAM model ACS easy clean element is cylindrical, made of reverse formed and resistance welded wedge-wires. Flow during straining is from the inside to the outside. Flow direction for back-washing, however, is opposite. The basket is a fabricated cage assembly that consists of a top, bottom and middle spacer ring that are fit and welded to the vertical spacer rods. The screen elements are constructed for easy replacement; they are bolted around the cage assembly in equal segments. The easy clean straining elements are available in reverse formed configuration to 0.001” and are designed to give maximum open area and to deliver top performance in any straining application.

OPTIONAL CONTROLSA) NEMA 4 (water and dust tight) control box,

complete with solid state adjustable timers. • Backwash drive motor starter • Indicator lights to indicate Power on and unit Flushing • H.D.A. (Hands-Off-Auto) selector switch, permits changing from normal intermittent (differential operation) to continuous back-flushing • Internally adjustable backwash timer for manual back-flush cycle start, recycle timer. • Differential pressure switch • Full port ball valve complete with actuator, electric actuation

B) Same as A) except the NEMA 4 control box is supplied with an input supply transformer for use at 220-480V, single phase, 50/60 Hz.

C) Other as specified by specification or customer (example: control boxes NEMA 4X, 7, or 9, external alarm connection, pneumatic actuation, special wiring, specific brand components).

ACS CONTROL SYSTEMSEvery ACS strainer is shipped completely assembled, ready to operate. A single 1/3 H.P. motor drives the backwash mechanism of the largest strainer size. The automatic backwash controls (if required) actuate the backwash cycle. RAM Liquid Filtration automatic controls are engineered and designed to allow for optimal performance and ease of operation. They are factory set and field adjustable so as to provide for a minimal loss of backwash liquid and provide total cleaning of the east clean element.

APPLICATION AND INDUSTRIAL USESACS strainers are designed for removal of suspended particulate from all types of liquids, used in practically all industries for quenching, lubrication, spraying, cooling, descaling, pump, valve, heat exchanger and spray nozzle protection. Liquids filtered include well/lake, river, cooling tower or sea (salt water) to white water, black liquor (pulp and paper mills), chemicals, acids, sewage and lubricating oils.

MODEL ACS DESIGN, FEATURES & OPERATION

RAM model ACS strainers are offered in capacities to 100,000 gallons per minute. The strainers are offered for vertical installation and available to 0.001” degree of cleaning using easy clean elements.

RAM model ACS strainer is a fabricated single body vessel with a single straining element.Designed as a fully automatic self-cleaning strainer. The vessel is available fabricated to ASME Codelatest edition and addenda (“U” stamped) and National Board Registered, or built in general accordance to ASME Code without code stamp or registration. In Canada, it is available also with “CRN’” registration as required by province. Inlet and outlet connections are on the sides. The debris laden fluid enters the large lower chamber where it slows down and contaminants settle to the bottom. The fluid flows upward into the straining basket. The fluid then passes through the easy clean element and exits the strainer through the outlet nozzle.

Contaminants gather on the inside of the basket in pockets created by the baskets vertical spacer rods. The backwash arms provide a flow path for the debris collected and the fluid to dislodge the debris during the backwash cycle. The backwash arms direct the dirty fluid to an open pit or tank at atmospheric pressure outside of the strainer.

The arms rotate slowly to allow each section of the basket to be backwashed in turn. The backwash drive system converts the high rotational speed of the electric motor to a low rotational speed so as to more effectively backwash the straining basket. A shear pin protects the gear reducer, shafting and backwash arm from serious damage. The ACS strainer can perform self-cleaning (backwashing) without interruption of flow. These strainers are designed primarily for liquid service where large quantities of debris must be removed.

RAM model ACS strainer uses a motor driven backwash arm to clean the strainer basket. A hollow shaft with two diametrically opposite arms rotates inside the basket and in turn blocks off a section of the basket. The two arms are open to the basket and to the atmosphere through the hollow shaft and backwash piping. Reversal of flow causes the debris and other contaminants to flow out through the backwash arm and out through a control valve to the drain. The strainer can be set for continuous backwash or automatic intermittent backwash operation. The backwash arm is driven by a standard motor through a reduction gear. Access opening is provided for inspection and removal of large pieces of debris accumulated at the bottom of the strainer.


DESIGNRAM modular filter systems consist of three (3) or more single filter units valved in parallel to common headers. The advantage of this type of filter system is that each filter unit can be individually backwashed either automatically, manually, or intermittently while the others remain on stream. PRINCIPLE OF OPERATION The filter works by unfiltered liquid entering the inlet header. It flows through the valve and upward through the filter media from outside to inside. The filtered liquid discharges through the outlet header at the top of the unit.

BACKWASHING With the direction of flow (outside to inside), the solids build up on the outside of the filter elements. This makes the element very easy to backwash. Backwashing takes place when the differential pressure between the inlet header and outlet header reaches a preset level. At this point, the filter control module triggers a backwash sequence. In turn, each filter is cleaned while the other units remain on stream.

INTERNAL OR EXTERNAL BACKWASHINGInternal backwashing is when the filtered liquid is used for backwashing. External backwashing is when a secondary liquid is used. Internal backwashing is usually recommended where the process liquid is free flowing, inexpensive and plentiful. External backwashing is highly recommended when the operating pressure is too low for effective backwashing, or when it is not economically feasible.

MODEL FAFI & FAFX AUTOMATIC FILTER MODEL FAFI & FAFX AUTOMATIC FILTER

STANDARD FEATURES• Positive basket seal to prevent by-pass• Manual or fully automatic self cleaning• Continuous flow even white backwashing• Maintenance on each filter unit can be performed

without shutting down the system• Quick opening cover for easy access to filter media• Reusable filter elements

FLOW DIAGRAM FOR INDIVIDUAL CHAMBER

EXTERNAL BACK-WASHING SYSTEM INTERNAL BACK-WASHING SYSTEM


0

2

4

6

8

10

12

14

16

18

20

22

24

26

0 2 4 6 8 10

12

14

16

18

20

22

24

26

28

30

32

34

Num

ber of

Ele

men

ts R

equi

red

Factored Flow (GPM) X 100

Sizing Chart (Chart 1)

MODEL FAFI & FAFX AUTOMATIC FILTER MODEL FAFI & FAFX AUTOMATIC FILTER

The continuous wedge-shaped slots in the element effectively separates solids from the fluid passing through the unit. The unique RAM wedge design of the element offers high strength, high open area and less clogging than other types of elements. These 316 stainless steel screens are available from 0.001” to 0.25” slot size.

FABRICRAM fabric media are woven from synthetic fibers and are chemically compatible with most liquids. Fabric media offers an excellent means of filtering liquids with retention levels down to nominal 5 microns. These synthetic fibers also have excellent solids release characteristics for easy cleaning.

WIRE MESHWoven wire mesh screens provide good solids release characteristic. The wire mesh screens are made of type 316 stainless steel and wedge-wire inner backing is used to give it support. Wire mesh sizes are available from 1 micron to 100 micron.

HOUSING MATERIAL: Standard construction is carbon steel internal epoxy coated and stainless steel, all grades.

GASKETS: Available in buna-N, ethylene propylene (EPR), viton, silicone or teflon.FILTER MEDIA: Stainless steel, polyester or polypropylene.DESIGN PRESSURE: 150 psi and 300 psi standard construction.TEMPERATURE LIMITS: Temperature limits will vary depending on the gasket and screen material.FLOW RATE: Max. flow rate per element is 150 GPM.

EXAMPLE: Determine filter size for 500 gpm using wedge-wire element with 0.006” slot. 1. From Table 1 determine sizing factor.

(which is 2.1). 2. Multiply the flow by the sizing factor to give us the

factored flow. (ie. 500 x 2.1=1,050 factored flow).3. From Chart 1 determine the number of elements

needed. In our example for factored flow of 1050, the number of elements needed is 5.

4. Table 2 gives the model # needed for either internal or external backwashing units.

5. Make sure that maximum flow rate per element is not exceeded. Divide the flow rate by the number of elements. The result should not exceed 100 gpm (500/5=100 gpm).

FLOW FACTOR (TABLE 1)

FLOW FACTOR (TABLE 2)

SIZING CHART

*Above sizing factor is based on filtering water. Dimensions are general, all information to be confirmed with design drawing.

Units placed back-to-back are half the Length “L”. Dimensions are general, all information to be confirmed with design drawing.

RAM LIQUID FILTRATION1311 Kerrisdale Boulevard, Newmarket, ON L3Y 8Z8

1.844.726.3458 | [email protected]

Documents

STRAINER SELECTION CHART Strainer Selection · PDF filetable of contents automatic filter & strainer selection ... consult chemical handbook. ... model cs simplex strainer vessels