9101 spg-12 eaton revise · duplex strainers 5 features • continuous flow – no shutdown for...

TABLE OF CONTENTS

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Duplex Basket StrainersModel 53BTX, 3/4˝ to 4˝ . . . . . . . . . . . . . . . . . . . . . . . . . . .3Model 50, 5˝ to 8˝ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Model 53BTXSJ, Steam Jacketed, 1˝ to 8˝ . . . . . . . . . . . . .4Model 570, Multi-Basket, 8˝ to 36˝ . . . . . . . . . . . . . . . . . . .5Model 50, 10˝ to 18˝ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5All-Plastic, 1/2˝ to 4˝ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Simplex Basket StrainersModel 72, Large Capacity, 3/8˝ to 8˝ . . . . . . . . . . . . . . . . . .6Model 30R, Economical, 1-1/2˝ to 8˝ . . . . . . . . . . . . . . . . .7Model 72, Straight Flow, 10˝ to 18˝ . . . . . . . . . . . . . . . . . . .7Model 72L, Tefzel™-Lined, 1˝ to 6˝ . . . . . . . . . . . . . . . . . . .8Model 72SJ, Steam Jacketed, 1˝ to 8˝ . . . . . . . . . . . . . . . .8Model 510 Multi-Basket, 8˝ to 36˝ . . . . . . . . . . . . . . . . . . . .9All-Plastic, 1/2˝ to 8˝ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Y StrainersModel 80 and 85, 1/4˝ to 10˝ . . . . . . . . . . . . . . . . . . . . . . .10

Custom Fabricated StrainersModel 90 Simplex Basket, 4˝ to 30˝ . . . . . . . . . . . . . . . . .11Model 91 Tee Type, 2˝ to 48˝ . . . . . . . . . . . . . . . . . . . . . . .11Model 92 Temporary, 2˝ to 24˝ . . . . . . . . . . . . . . . . . . . . .11Model 900 Duplex Basket, 6˝ to 24˝ . . . . . . . . . . . . . . . . .11

Automatic StrainersTechnical Information . . . . . . . . . . . . . . . . . . . . . . . . . . . .12Model 596 Strainer, 2˝ to 54˝ . . . . . . . . . . . . . . . . . . . . . .13Model 2596 Strainer, 10˝ to 20˝ . . . . . . . . . . . . . . . . . . . .13

Strainer Baskets and ElementsCylindrical, Pleated and Slanted Top Baskets . . . . . . . . . .14Automatic Strainer Screen Elements . . . . . . . . . . . . . . . .14

Technical DataPressure Drop Calculations, Correction Factors, More . . .15

Protecting Your Pumps, Filters, Nozzles,Flowmeters, Valves, Heat Exchangers,Condensers, Oil Burners, and BoilersFrom Pipeline Debris

For over 75 years, Eaton Strainers have earned theconfidence of thousands of users. They have led theway with designs that meet the ever-growing and rigorous demands of process and manufacturingindustries, utilities, and municipalities.

Modern Equipment and FacilitiesTo ensure our position as the world's leading strainermanufacturer, we continue to make major invest-ments in the acquisition of state-of-the-art equipment.Millions of dollars of CNC machining equipment havebeen installed to assure the accurate production andreproducibility of all strainer parts.

Large Inventories – 11,000+ Strainers in StockMaintaining the largest and broadest inventory ofstrainers in the industry, we can provide off-the-shelfdelivery of simplex, duplex, and Y strainers in castiron, carbon steel, bronze, stainless steel, and plasticssuch as PVC and Corzan® CPVC.

For our line of Strain-O-Matic self-cleaning filters andstrainers, a large inventory of standardized compo-nents allows us to meet custom requirements andship complete units within days.

Full Line of StrainersWe have strainers for almost any fluid and flow condi-tion. There is a broad and complete range of EatonStrainers from 1/4˝ to 60˝ pipeline size.

Custom RequirementsFor a unique configuration or size, unusually highpressure, or a special alloy, we have the capabilityand experience to economically fabricate a strainer toexactly meet your needs.

Quality Control StandardsStandards to which we can conform include: 1) MIL-I-45208A – required by the military and is ourstandard QC program and 2) ASME Section VIII –which authorizes us to code stamp strainers.

ISO CertificationWe are an ISO 9001:2000 certified manufacturer soyou can be assured that we design and build for qual-ity. Our Quality Management System is monitored andcertified by Lloyd’s Register Quality Assurance.

Applications and Sales EngineeringPrompt attention to the needs and questions of ourcustomers is the hallmark of our service. We have adedicated field sales engineering force in all majorcities in the United States, Great Britain, Canada,Europe, and the Far East.

Corzan® CPVC is a registered trademark of Noveon, Inc.Viton® is a registered trademark of DuPont Dow ElastomersTefzel® is a registered trademark of E.I. DuPontHastelloy® is a registered trademark of Haynes International Inc.DuraWedge® is a registered trademark of Eaton Corp.EASTAR® is a registered trademark of Eastman

DUPLEX STRAINERS

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Patented diverter cartridge assures leak-tight isolation of basket chamber during cleaning

FEATURES

• Dynamic patented ball sealing system for long life• Easy-to-operate lever handle…

no gear box required• Unique seat and seal design requires no

adjustments• Reinforced polymer seats for longer service life• Foot pads for rock solid installation• Double-stem O-rings for positive sealing• Easy-to-access body vent valve• Both side and bottom drain plugs

on each basket well• Piston seal strainer basket cover• Easy access for diverter cartridge removal• Optional steam jacket construction

Model 53BTX Duplex Basket Strainer, 3/4" to 4"Iron, Bronze, Carbon Steel or Stainless Steel – Threaded or Flanged

Flanged 4" Iron Model 53BTX

Flanged 1" StainlessSteel Model 53BTX

Body &Cartridge Diverter

Size Material Connection Seat/Seal Balls Rating

3/4", 1", 1-1/4", 1-1/2", 2", 2-1/2" Threaded 125# ANSI

Iron 200 PSIG @ 150°F

1", 1-1/2", 2", 2-1/2", 3", 4" Flanged (PN16 3.8 bar @ 66°C)TFE/ Stainless

3/4", 1", 1-1/4", 1-1/2", 2", 2-1/2" Bronze Threaded**Buna N* Steel

150# ANSI

Carbon Steel 200 PSIG @ 150°F

1", 1-1/2", 2", 2-1/2", 3", 4" Stainless Steel Flanged (PN16 3.8 bar @ 66°C)

Size Value Size Value

3/4" 13 2" 42

1" 13 2-1/2" 65

1-1/4" 18 3" 110

1-1/2" 25 4" 175

*Viton® standard for Stainless Steel, optional for iron, bronze, and carbon steel** 2-1/2” thread not available in carbon or stainless steel

*For water with clean, perforated basket

Selection Chart

Cv Factors*

NEW!

DUPLEX STRAINERS

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FEATURES

• Continuous flow – noshutdown for basketcleaning

• Rugged tapered plugdesign

• Lift jack prevents pluggalling

• Quick open coverrequires no tools

• Large capacity baskets• Threaded drain• Machined basket seat• Perforated or mesh

stainless steel basket

OPTIONS

• Ductile iron construction• Basket perforations from

1/32" to 1/2"• Basket mesh from

20 to 400• Monel baskets• Viton®, TFE or EPDM seals• Vent valves• Drain valves• 1/4" NPT taps• Pressure differential

gauge and switch connections

• Magnetic basket inserts

Model 50 Duplex Basket Strainer, 5" to 8" Iron, Bronze, Carbon Steel, Stainless Steel – Flanged

Size Body Material Plug Material End Connections Seals Rating

5", 6", 8"Iron Iron or Flanged 125# 200 psi @ 100°F

Bronze Bronze Flanged 150# 5" and 6" sizes.

6", 8" Carbon Steel Bronze or Flanged 150#

Buna N

Stainless Steel 150 psi @ 100°F

6", 8" Stainless Steel Stainless Steel Flanged 150# Viton® 8" size.

Size Value

5" 300

6" 420

8" 900

*For water with clean,perforated basket

Selection ChartCv Factors*

Size Value

2" 42

3" 110*For water with clean,perforated basket

Cv Factors*

FEATURES

• Continuous flow – no shutdown for basket cleaning• Steam jacketed design• 1/2" NPT jacket connections• Up to 100 psi steam pressure• Quick-opening covers• Large capacity baskets• Threaded drain• Machined basket seats• Perforated or mesh stainless steel basket

OPTIONS

• Basket perforations from 1/32" to 1/2"• Basket mesh from 20 to 400• Monel baskets• Vent valves• Drain valves• 1/4" NPT taps• Magnetic basket inserts• Pressure differential gauge and switch connections

Model 53BTX-SJ Steam Jacketed Duplex Basket Strainer, 2" and 3"Carbon Steel, Stainless Steel – Flanged

Size Body & Cartridge End Connections Seat/Seal Diverter Balls RatingMaterial

2" & 3" Carbon Steel or Flanged 150# TFE/Buna N Stainless Steel 200 psi @ 100°FStainless Steel

Selection Chart

DUPLEX STRAINERS

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FEATURES

• Continuous flow – no shutdown for basketcleaning

• Sliding gate design• Eight baskets per

strainer (four per side)• Bolted cover• Compact• Threaded drain• Perforated or mesh

stainless steel basketsstandard

• Synchronized drive forpressure equalization

OPTIONS

• Bronze or stainless steelconstruction

• Basket perforations from1/32" to 1/2"

• Basket mesh 20 or 40• Monel baskets• Vent valves• Drain valves• Cover lift davit• Pressure differential


• Basket flange gaskets• Magnetic basket inserts

Model 570 Multi-Basket Duplex Strainer, 8" to 36" Iron, Carbon Steel – Flanged

Size Material End Connection Seals Pressure Rating(Wetted Parts)

8" to 36" Iron Flanged 125# 125 psi @ 100°F

8" to 24"Carbon Steel

Flanged 150# Non-Asbestos 175 psi @ 100°F

8" to 16" Flanged 300# 300 psi @ 100°F

Selection Chart


8" 700 20" 3600

10" 1250 24" 5200

12" 1600 30" 8000

14" 2000 36" 11000

16" 2500*For water with clean, perforated basket

Cv Factors*

FEATURES

• Continuous flow – noshutdown for basketcleaning

• Compact butterfly valvedesign

• Quick opening covers• Convoluted-design

baskets• Threaded drain• Perforated or mesh

stainless steel basket• Vent• Positive shutoff

OPTIONS

• Ductile iron construction• Basket perforations from

1/32" to 1/2"• Basket mesh 20 or 40• Monel baskets• Vent valves• Drain valves• 1/4" NPT taps• Pressure differential


• Magnetic basket inserts

Model 50 Duplex Basket Strainer, 10" to 18"Iron and Bronze – Flanged


10" to 12"Iron Flanged 125#

200 psi @ 100°FBronze Flanged 150#


Buna N

150 psi @ 100°FBronze Flanged 150#

Selection Chart


10" 1300 16" 3400

12" 2000 18" 4900


Cv Factors*

DUPLEX/SIMPLEX STRAINERS

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FEATURES

• Continuous flow – no shut-down for basket cleaning

• Excellent corrosionresistance

• No process media contamination

• Rated to 150 psi• Hand-removable cover• External cover threads• Threaded drain• In-line or loop

connections• No painting or coatings

required

OPTIONS

• Perforated or mesh-linedstainless steel baskets

• Clear EASTAR construc-tion

All-Plastic Duplex Basket Strainer, 1/2" to 4"PVC, CPVC and EASTAR® – Socket, Threaded and Flanged


1/2" to 4" PVC or CPVC Socket, Threaded Viton® 150 psi @ 70°For Flanged

1/2" to 2" EASTAR Socket, Threaded Viton 100 psi @ 70°For Flanged

Selection Chart

FEATURES

• Quick open cover without tools



OPTIONS


• Basket mesh from 20 to 400

• Monel baskets• Viton, TFE or EPDM seals• Vent valves• Drain valves• 1/4" NPT taps• Magnetic basket inserts• Pressure differential


Model 72 Simplex Strainer, 3/8" to 8" Iron, Bronze, Carbon Steel and Stainless Steel – Threaded and Flanged


3/8" to 3" Iron and Bronze Buna N

1" to 3"Carbon Steel Threaded

Stainless Steel Viton

Iron Flanged 125# 200 psi @ 100°F

1" to 8"Bronze Buna N

Carbon Steel Flanged 150#

Stainless Steel Viton

Selection Chart


3/8" 15.0 2" 73

1/2" 15.0 2-1/2" 125

3/4" 15.0 3" 180

1" 22.5 4" 350

1-1/4" 31.5 6" 900

1-1/2" 46.0 8" 1400


Cv Factors*


1/2" 12.5 1-1/2" 45

3/4" 13 2" 48

1" 14 3" 200

1-1/4" 40 4" 230


Cv Factors*

SIMPLEX STRAINERS

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FEATURES

• Economical• Hand removable cover• Drain plug• Machined basket seat

OPTIONS

• Basket perforations from 1/32" to 1/2"


• Monel baskets• Vent valves• Drain valves• 1/4" NPT taps• Magnetic basket inserts• Pressure differential


Model 30R Simplex Strainer, 1-1/2" to 8"Iron – Threaded and Flanged


1-1/2" to 3" Threaded

1-1/2" to 8"Iron Threaded or Buna N 200 psi at 100°F

Flanged 125#

Selection Chart

FEATURES

• Quick open cover• Straight through flow

design• Low pressure loss• Convoluted-basket

design• Hand removable basket• Threaded drain• O-ring cover seal• Perforated or mesh


OPTIONS


• Basket mesh 20 or 40• Monel baskets• Vent valves• Drain valves• 1/4" NPT taps• Pressure differential


Model 72 Straight Flow Simplex Strainer, 10" to 18" Iron, Bronze – Flanged



Bronze Flanged 150#200 psi @ 100°F


Buna N

Bronze Flanged 150#150 psi @ 100°F

Selection Chart

Size Value

10" 2300

12" 3200

14" 5000

16" 6000

18" 7000

*For water with clean,perforated basket

Cv Factors*


1-1/2" 58 4" 240

2" 90 6" 370

2-1/2" 140 8" 600

3" 200


Cv Factors*

SIMPLEX STRAINERS

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FEATURES


• Abrasion-resistant 1/8" Tefzel liner

• Service temperatures to300F

• Quick-opening cover• Large capacity basket• Flanged drain• Perforated or mesh lined

baskets• Low cost alternative to

exotic alloy strainers

OPTIONS

• Monel baskets• Hastelloy® C baskets• Tefzel-coated baskets

Model 72L Tefzel® Plastic-Lined Simplex Strainer, 1" to 6" Carbon Steel with Tefzel Liner – Flanged


1" to 6" Tefzel Liner Flanged 150# Viton® 200 psi @ 100°F(Carbon Steel body)

Selection Chart

FEATURES

• 1/2" NPT steam connections

• Up to 100 psi steampressure

• Quick-open cover without tools



OPTIONS



• Monel baskets• Viton, TFE or EPDM

seals• Vent valves• Drain valves• 1/4" NPT taps• Pressure differential


Model 72SJ Steam Jacketed Simplex Strainer, 1" to 8"Carbon Steel and Stainless Steel – Flanged


1" to 8" Carbon Steel or Flanged 150# Viton 200 psi @ 100°FStainless Steel

Selection Chart


1" 22.5 3" 180

1-1/4" 31.5 4" 350

1-1/2" 46.0 6" 900

2" 73.0 8" 1400

2-1/2" 125*For water with clean, perforated basket

Cv Factors*


1" 23 3" 170

2" 72 4" 350

2-1/2" 135 6" 880


Cv Factors*

SIMPLEX STRAINERS

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FEATURES

• Four baskets per strainer• Bolted cover• Straight-through flow

design• Compact• Threaded drain• Perforated or mesh stain-

less baskets standard

OPTIONS



• Monel baskets• Vent valves• Drain valves• 1/4" NPT taps• Basket flange gaskets• Cover lift davit• Bronze or stainless steel

construction• Pressure differential gauge

and switch connections• Magnetic basket inserts

Model 510 Multibasket Simplex Strainer, 8" to 36"Iron and Carbon Steel – Flanged


8" to 36" Iron Flanged 125# 125 psi @ 100°F

8" to 24"Carbon Steel

Flanged 150# Non-Asbestos 150 psi @ 100°F

8" to 16" Flanged 300# 300 psi @ 100°F

Selection Chart

FEATURES


• External cover threads• Rated to 150 psi• Hand removable cover• Perforated plastic

baskets• Threaded drain• In-line or loop

connection• No painting or coatings

required

OPTIONS

• Perforated or mesh-linedstainless steel baskets

• Pressure differentialgauge and switch connections

• Clear EASTAR construction

All-Plastic Simplex Strainer, 1/2" to 8"PVC, Corzan® CPVC and EASTAR® – Socket, Threaded and Flanged


1/2" - 4" PVC or CPVC Threaded, Socket or Flanged

Viton®

150 psi @70°F

1/2" - 2" EASTAR Threaded, Socket or Flanged 100 psi @70°F

6" to 8" PVC or CPVC Flanged 150 psi @70°F

Selection Chart Size Value Size Value

1/2" 15 2-1/2" 290

3/4" 18 3" 300

1" 20 4" 350

1-1/4” 55 6" 1000

1-1/2" 58 8" 750


Cv Factors*


8" 1600 20" 9000

10" 2500 24" 13000

12" 3500 30" 19000

14" 4800 36" 23000

16" 5800


Cv Factors*

Y STRAINERS

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FEATURES

• Compact design• Bolted or threaded

covers• Perforated or mesh-lined

stainless steel screens• Suitable for liquid, gas or

steam• Synthetic fiber gaskets

OPTIONS

• Chrome-moly construction

• Butt weld connections• Monel screens• Larger sizes• 600#, 900#, 1500# and

2500# ratings available• 1/32˝ to 1/2˝ perf stainless

steel screens• 20 to 400 mesh stainless

steel screens

Model 85 Y Strainers, 1/4˝ to 10˝Carbon Steel and Stainless Steel - Threaded, Socket Weld and Flanged

Size Material End Connections Cover Rating (WOG) - Non-Shock Model No.(Wetted Parts)

1/4˝ to 2˝Carbon Steel Threaded or Socket Threaded

1480 psi @ 100°F

Stainless Steel Weld 600# 1440 psi @ 100°F

Carbon SteelFlanged 150# 285 psi @ 100°F

85

1/4˝ to 10˝Flanged 300# 740 psi @ 100°F

Stainless SteelFlanged 150# Bolted 275 psi @ 100°F

Flanged 300# 720 psi @ 100°F

1/2˝ to 10˝ Carbon Steel Flanged 600# 1480 psi @ 100°F 80

Selection Chart

Stainless steel screens are standardfor all Eaton Y strainers.

Cross-section of Ystrainer with blow-off connected forquick clean-out

Flow path through a Y strainer

Typical Perforations (Shown Actual Size)

20 Mesh

1/16 ˝Perf

1/8 ˝Perf

CUSTOM-FABRICATED STRAINERS

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There are two ways to fulfill your requirements fornonstandard strainers. First, we show four fabricateddesigns below. These can be easily modified to yourspecial requirements. If none of these will do the job,

we can create a unique, one-of-a-kind strainer that willfit your needs exactly – with no compromises. Your spe-cial size, pressure rating and materials of constructionrequirements for an Eaton Strainer are never a problem.

Nothing Too Big • Nothing Too Small • Nothing Too Special

Model 90 Simplex Strainer - 1" to 48"

Materials of Construction: Carbon steel, stainless steel or MonelFlanged Connections: ANSI 150#, 300# or 600#Cover: Bolted or quick-opening hingedBasket: Stainless steel – perforated or mesh-linedOptions: Alloy construction for body and baskets, duplex configuration,ASME code construction, other pressure ratings, RTJ-style connections

Model 91 Tee Type Strainer - 2" to 48"

Material of Construction: Carbon steel, stainless steel or MonelFlanged Connections: ANSI 150#, 300# or 600#Cover: Bolted or quick-opening hingedBasket: Stainless steel – perforated or mesh-linedInstallation: Horizontal or verticalOptions: ASME code construction, alloy construction, other pressure ratings

Model 92 Temporary Strainer - 2" to 24"

Material of Construction: Stainless steel or MonelFlanged Connections: ANSI 150#, 300# or 600#Design: Cone or basket typePerforations: 1/32" to 1/2"Mesh Liners: 20, 40, 60 80, 100 sizesOptions: Alloy construction, RTJ-style connections

Model 900 Duplex Strainers - 1" to 48"

Material of Construction: Carbon steel or stainless steel Flanged Connections: ANSI 150# or 300# Design: Butterfly or ball valve duplex arrangementCover: Bolted or quick-opening hingedBasket: Perforated or mesh stainless steelOptions: Alloy construction for body or baskets, automated operation,backwash design, ASME Code construction

AUTOMATIC SELF-CLEANING STRAINERS

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OperationThe debris-laden dirty fluidenters the strainer's large bot-tom chamber where the linevelocity is reduced. Flow contin-ues upward, passing radiallythrough the “sealed” screenelement. Unwanted materialsare trapped on the inside of thescreen. The flow is uninterrupt-ed and the strained clean fluidcontinues into the outer annulusof the strainer body and exitsthrough the outlet nozzle.

Backwash cleaning is accom-plished by utilizing the pressuredifferential between line pres-sure and atmosphere. A hollowfull flow backwash arm –extending the full length of thescreen element – rotates slowly inside the screen andis piped to atmosphere. The port shoe is in proximityto the screen and its opening is equivalent to the“debris collector” sections created by the convolu-tions and/or the vertical collector bars in theDuraWedge® elements.

When cleaning is required, the automatic backwashvalve opens the system to atmosphere – causing a

high velocity reverse flowacross the isolated section ofthe screen. Dirt and debris areflushed from this segment ofthe screen into the backwasharm and out of the strainer viathe backwash piping.

During the backwashing cyclethe main flow is uninterruptedand continues to be strained inthe normal manner. A manualthrottling valve is recommendedafter the control valve. Thus,backwash flow can be regulat-ed and balanced for optimumperformance and reduction ofwater loss.

An automatic control systemconsisting of a discrete mount-

ed electrical panel, pneumatically or electrically actuated valves and a differential pressure switchoperates the strainer. The cleaning cycle can be setto “activate” by differential pressure and/or on atimed cycle. The control system will automaticallyclose the backwash valve after the screen element isproperly cleaned. The unit can also be operated man-ually from the control panel or in the continuous back-wash mode.

Model 53BTX Duplex Basket Strainer, 3/4" to 4"Iron, Bronze, Carbon Steel or Stainless Steel – Threaded or Flanged

Continuous Flow During Backwash Cycle Means No Shutdown Time for Element Cleaning

��

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Straining Cycle Backwashing Cycle

Rotating Full Flow HollowBackwash Arm Piped toAtmosphere

Vee-ShapedProfile WireStrained Clean

Continuous Flow

DuraWedge®

Screen Element

ReinforcingBands

Collector Bars

RotatingFull FlowBackwash

Arm

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Debris-LadenFlow From Inlet

TopView

StrainedContinuousFlow

Debris-Laden FlowFrom Inlet

BackwashArm OpenedtoAtmosphere

Debris-Laden Fluid CarriedAway Through BackwashPiping

Strained CleanContinuousFlow

Reverse Flow

DuraWedge®

Screen Element

ReinforcingBands

Collector Bars

ReverseFlow

TopView

Dirty FluidDischargedThroughBackwashPiping

StrainedContinuousFlow

Dirty Fluid FromInlet Nozzle

Dirty FluidFrom InletNozzle

AUTOMATIC SELF-CLEANING STRAINERS

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DesignThe Eaton Automatic Self-Cleaning Strainer is amotorized unit designed for the continuous removal of entrained solids from liquids in pipeline systems.They have successfully performed in industrial,process, water and wastewater, power, paper andmunicipal applications for over 30 years.With an automatic control system monitoring thestrainer operation, cleaning is accomplished by anintegral backwash system. A small portion of thescreen element is isolated and cleaned by reverseflow. The remaining screen area continues to strain –providing uninterrupted flow. With this efficient design,only a small amount of the liquid being strained isused to carry away the debris from the strainer.The Models 596 and 2596 are available in sizes 2"through 24" in cast construction and 2" through 60" infabricated construction. Design and construction arein general accordance with ANSI and ASME Sec. VIII,Div. 1. A wide range of screen designs are offeredthrough 1/2-inch openings.ApplicationsEaton Automatic Self-Cleaning Strainers are commonly used on water service where the disposalof debris and backwash water is not a problem.Continuous flow is assured and protection is providedfor nozzles, pumps, valves, heat exchangers andprocess equipment.These units can also successfully handle other fluidssuch as white water, black liquor, starch, fuel andlubricating oil, caustic solutions and cooking oils. Adetermining factor in these cases is the recycling ofthe backwash fluid. Automatic self-cleaning strainerswill significantly reduce maintenance costs and pro-vide uninterrupted flow. They are a particularly worth-while investment where the solids loading is high orupset conditions occur. Frequently, cleaning and serv-icing of manual strainers is costly, and if not properlyattended, serious disruptions to the entire piping sys-tem can occur. Also, they are an ideal solution formaintenance problems where the strainer is in aninaccessible location.Typical ApplicationsAutomatic self-cleaning strainers are used in nearlyevery industry to strain fresh, brackish, or salt intakewater for plant services; cooling, process, fire protec-tion, etc.Process Industry – Protect heat exchangers,pumps, valves and water spray nozzles.Power Industry – Protect heat exchangers, pumpseal water, traveling screen wash water.Pulp & Paper – Removing fibers from white water filtrate preventing clogging of nozzles. Separate barkand chips for recycling.Sewage/Waste and Water – Straining secondaryeffluent – thereby protecting spray nozzles while alsoproviding clean plant service water.Primary Metal Industry – Provide clean water forquenching, descaling, blast furnace cooling.

10" Cast Iron Self-CleaningStrainer

36" Fabricated Carbon Steel Self-Cleaning Strainer

STRAINER BASKETS AND ELEMENTS

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The basket or element is the heart of an Eaton Strainer. It is designed to be both effective anddurable so that it will function reliably for years. After a particular type of strainer housing has been selected,

equal concern should be given to the basket orscreen design and the perforation or mesh size – forthis alone determines the ultimate functionality and performance of the strainer.

Cylindrical Basketsfor Simplex andDuplex Strainers upto 8˝ SizeThe strainer coverpresses down on thebow-shaped handleand assures a tightseal. This is the stan-dard, basic strainerbasket, available instainless steel orMonel, with a widerange of perforationsand mesh linings tohandle any strainingproblem.

Pleated TypeBaskets for Model72 Simplex and forModel 50 DuplexSizes 10˝ to 18˝Pleated, open typebaskets have a verylow pressure loss. Theconvoluted or pleatedstructure of the screengives much greaterstraining area thanother designs.Available in plain perforated metal orwith a fine mesh lining.

Slanted Top TypeBaskets for Model510 Simplex andfor Model 570Duplex Sizes 8˝ to 36˝The slanted, open topdesign allows fluid toenter easily and cutsdown pressure droploss. By using four ofthese baskets in eachchamber of the strain-er, individual basketsize is reduced. Thismeans only one per-son is needed to cleaneven the largest sizebaskets.

Automatic StrainerScreen ElementsModel 596 and 2596Automatic, Self-Cleaning Strainers usea screen elementrather than a basket totrap unwanted parti-cles. These screen ele-ments are designed sothat, during backwash-ing, the debris is easilydislodged and carriedaway through thebackwash arm and outof the strainer. Severaltypes of screen ele-ments are available tomeet all applicationrequirements.

Magnetic InsertsEaton strainer basketscan be supplied withmagnetic insertswhich are valuablewhen microscopic ironor steel particles arepresent. These mightpass through a finemesh lining, but themagnetic insert willcatch them. Our pow-erful magnets areencased in stainlesssteel to preventcorrosion.

Bag Filtration Systems…for removal of large amounts of very fine material from theprocess media.• Filter vessels in your choice of

stainless steel, carbon steel or corrosion-resistant plastic.

• Choose from a huge selection of filter bags.

Gas/Liquid Separators…remove 99+% of moisture and particulate matter 10microns and larger from air, gas and steam lines. Anexclusive vortex containment plate (VCP) prevents re-entrainment and eliminates the need for complexbaffles or deflectors. Offered in a variety of differentmodels for application flexibility.

More Quality Eaton Filtration Products

TECHNICAL DATA

15

Pressure Drop CalculationsTo accurately calculate the pressure loss forfilters and strainers in a pipeline, proceed asfollows:

1. First calculate pressure loss using Cv factor formulaat right.

2. Take the pressure loss figure obtained in (1) andrecalculate it using the appropriate correction factorfrom the following tables.

Pressure Loss Calculation Using Cv Factor

Q∆P = — [ Cv ]

∆P = Pressure DropQ = Flow in GPM

Cv = Flow Coefficient

The pressure loss across a strainer or filter can be calculated using the system's flow rateand the Cv factor for that strainer or filter.

For example, a 1˝ strainer with a Cv factor of 8 will have a 4 psi pressure loss in a systemwith a 16 gpm flow rate: (16 ÷ 8)2 = 4.

Correction Factors for Mesh-Lined Basket

Strainer Basket Opening Equivalents

Water OnlyMultiply the pressure drop for perforated baskets by thefollowing:

Fluids Other Than WaterFirst – Multiply the pressure drop for water shown in charts by the specificgravity of the liquid.Second – Multiply the corrected pressure drop figure by the following cor-rection factors for more viscous liquids. (Water has a viscosity of 30 SSU.)

Mesh Inches Millimeters Microns

400 0.0015 0.0381 38

300 0.0018 0.0457 45

250 0.0024 0.0609 60

200 0.0027 0.0686 68

150 0.0041 0.1041 104

100 0.0065 0.1651 165

80 0.007 0.1778 177

60 0.009 0.2286 228

40 0.015 0.8636 380

20 0.034 0.8636 862

Perf Inches Millimeters Microns

1/32 0.033 0.838 838

3/64 0.045 1.143 1143

1/16 0.070 1.778 1776

3/32 0.094 2.387 2387

1/8 0.125 3.175 3175

5/32 0.150 3.810 3810

3/16 0.1875 4.762 4762

1/4 0.250 6.350 6350

3/8 0.375 9.525 9525

1/2 0.500 12.700 12700

Basket Mesh Correction Factor

40 Mesh 1.2

60 Mesh 1.4

80 Mesh 1.6

100 Mesh 1.7

200 Mesh 2.0

325 Mesh 2.5

Unlined 40 Mesh 60 Mesh 80 Mesh 100 Mesh 200 Mesh 325 MeshViscosity Perforated Lined Lined Lined Lined Lined Lined

(SSU) Basket Basket Basket Basket Basket Basket Basket

500 1.6 1.9 2.1 2.4 2.6 3.1 3.6

1000 1.7 2.2 2.4 2.6 2.8 3.3 3.8

2000 1.9 2.4 2.7 2.9 3.2 3.8 4.0

3000 2.0 2.6 2.9 3.2 3.5 4.1 4.3

5000 2.2 3.0 3.5 4.0 4.5 5.3 6.3

10000 2.5 3.5 4.2 5.0 6.0 7.1 8.5

Visit the Eaton Strainer On-Line LibraryLearn how to select the right strainer for your application from help-ful topics that include how to choose the right strainer according toflow rates expected, how to select the best basket, what mesh orperf size is right for you, whether to choose a simplex or duplexstrainer and other important strainer considerations.

Download Engineering Drawings from the WebYou can print out or view detailed engineering drawings for any ofthe products in this catalog with a quick download. For engineerswith AutoCad software, you can download AutoCad files.

www.filtration.eaton.com

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© 2006 Eaton CorporationAll Rights ReservedPrinted in USAForm No. SPG-12January 2006

North AmericaEaton Filtration, LLC900 Fairmount AvenueElizabeth, NJ 07207USAtel: 1.800.859.9212tel: 1.908.787.1000fax: 1.908.351.7893e-mail: [email protected]

Europe/Africa/Middle EastEaton Filtration GmbHAuf der Heide 253947 NettersheimGermanytel: +49.2486.809.0fax: +49.2486.809.800e-mail: [email protected]

Asia/PacificEaton Filtration Pte. Ltd.#05-02 Shriro HouseSingapore, 159640tel: +65.6452.0955fax: +65.6452.1132e-mail: [email protected]

South AmericaEaton Filtration Indústria de Filtros Ltda.Rua Padre Roque, 2084Bairro da Saude, Mogi Mirim/SPCEP: 13800-335 Braziltel: +55.19.3805.8200fax: +55.19.3805.8201e-mail: [email protected]

GAF®, the GAF® logo, ACCUGAF™, DURAGAF™, PROGAF™, and GAF SNAP RING® are regis-tered trademarks of GAF Corporation in theUnited States and are used under license.HAYWARD FILTRATION™ is a trademark ownedby and used with permission of HaywardIndustrial Products, Inc.

9101 spg-12 eaton revise · duplex strainers 5 features • continuous flow – no shutdown for...

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