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A U T O

S E L F C

L E A I N I N G

- 99 -

Au toma t i c Se l f -C lean ing

S t ra iners Pressures to 740 PSIG (51 BARG)

Temperatures to 400F (204C)

qWater and Liquid service

q Power Industry C ooling water

q Pulp & Paper Removing fibers

q Process Equipment P rotect equipment

qM etal & M ining Q uenching, blast furnace

cooling

Applications

SIZES

2 (50mm) to36 (900 mm)

RATINGS

ASME Class 150

ASME Class 300

END CONNECTIONS

Flat Faced Flanged

Raised Faced Flanged

Ring Joint Flanged

Buttweld

MATERIALS

Carbon Steel

Stainless Steel

Other materialsupon request

FEATURES

Standard and Custom Engineered Designs

Complete Control Systems

Intermittent or Continuous Mode options

Individual or Skid System designs

High Strength reverse rolled wedge wire screens


3/7

AUTO

SELFC

LEAINING

STRAINERS

- 100 -

800

700

600

500

400

300

200

100

0

150#Steel

300#Steel

FA SERIESFABRICATED AUTOMATIC

SELF-CLEANING STRAINERS

Pressures to 740 PSIG (51 BAR G )

Temperatures to 400F (204C )

q Standard and Custom Engineered Designs

q Reverse rolled wedge wire screen for high strength

q Proportioned outer annulus decreases pressuredrop

q Low inertia backwash assembly increasesefficiency and minimizes power requirements

q Fail safe mode to prevent internal damage fromjamming by large debris

q Large inspection port allows for inspection andremoval of settled debris

MODELSq FA1 Inline, side backwash drain, (10" 36")

q FA2 Inline, bottom backwash drain, (2" 8")

q FAZ C ustom C onfiguration

OPTIONS (Consult factory)q O ther materials, sizes and/or configurations

q O ther screen sizes/materials

q U stamped vessels

q External/Internal coatings

q C ustom control panels and wiring per customer requests.

q Adjustable timer and differential pressure override switch forautomatic intermittent control mode

q C ontinuous on/off control mode

q C ustomer requested control valves and tubing

q Skid mounted or free standing designsq C ontact Factory for other Options

F A 1 C R 1 R - B V 1

1 2 3 4 5 6 7 8 9 10 11

S creen S td.

M odel Body Inlet C onnec- Control Wedge Slot

M aterial Size C lass tion Dash Panel1 Wire2 O pening

FA Series Ordering Code

Model - Position 1 - 3FA1 - Inline, S ide Ba ckwa sh dra in(S izes 10"- 36")

FA2 - Inline, Bottom Backwashdrain (S izes 2"- 8" )FAZ - Cus tom Co nfigura tion

Body Material - Position 4C - Carbon SteelV - 304 S ST- 316 SSM - MonelH - Has telloyZ - Other

Inlet Size - Position 5H - 2J - 212

K - 3M - 4N - 5P - 6Q - 8R - 10S - 12T- 14

Class - Position 61 - 1503 - 300Z - Other

PRESSURE/TEMPERATURE CHARTAS ME B 16.34

Connection - Position 7B - But t WeldF - Flat Face Flange

J - Ring J oint Flang eR - Raised Face FlangeZ - Other

Dash - Position 8

Control Panel1 - Position 9A - NoneC - 1-pha se, 110/120 VACE - 3-pha se, 460/or 80 VACF - 3-phase, 575 VACZ - Other

1. For standard control system components see page 10. For a ll other plea se c ons ult fa cto ry.2. Sta nda rd S creen material is 304SS

For any variations, use the pa rt numbering s ystem ab ove b ut clearly indicate the a dd itional requirements.

APPLICATIONS

qWater and Liquid service

q Power Industry - cooling water

q Pulp & P aper - Removing fibers

q Process Equipment - P rotect equipment

q M etal & M ining Q uenching, blast furnace cooling

qWater & Waste - Clean plant service water

APPLICABLE CODESq Designed/M anufactured to meet ASM E B31.3 or

AS M E B31.4 and/or ASM E Section VIII, D iv. 1.

q C anadian Registration Numbers (C RN) upon request

qWelders certified to ASM E S ection IX

q AS M E U Stamp upon request

Screen - Wedge Wire2 -Position 10

V - 304S ST- 316S SM - MonelH - Has telloyZ - Other

Standard Slot Opening -

Position 111 - .156"2 - .125" (1/8" )3 - .094"4 - .063" (1/16" )7 - .031" (1/32" )8 - .020"9 - .015"A - .010"B - .005"C - .003"Z - Other

U - 16V - 18

W - 20X - 22Y - 241 - 282 - 303 - 364 - 40Z - Other

See page 104

See page 105

see page 105


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A U T O

S E L F C

L E A I N I N G

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S TANDARD S TANDARDS IZE S C REEN MATERIALS

304SS10-36 .125" (1/8" )Wedge Wire

SCREEN OPENINGS*

Connections: 10 - 36 RF, FF, RTJ or B uttw eld

FA1 SERIESFABRICATED AUTOMATIC


SPECIFICATIONStrainer shall be designed and manufactured to meet

AS M E B31.3 or ASM E B31.4 and/or ASM E Section

VIII, Div I. The strainer body shall be 1-piece

construction, fabricated steel or other specifiedmaterial and inlet/outlet connections shall be In-Line

Design with a side backwash drain. The control

system shall be capable of automatically controlling

and monitoring the strainers operation. The strainer

shall have a fail-safe mode to prevent internal damage

from jamming of strainer shaft caused by large debris.

The strainer shall have a Nema 4 control panel with an

actuated valve to provide control of the backwash

flow. T he screen shall be size _______ wedge wire

construction. The strainer shall have an inlet size of

____ and open area ratio of _______. The Automatic

Strainer shall be SSI FA1____.

S IZE P RES S URE

10-36 20 P S ID

MINIMUM INLET PRESSURE(I/O Differential)

INLET BODY F G H J K L P WEIG HT

S IZE S IZE A B C D E (NP T) (Dia .) (NP T) (NP T) (B .C .) (Dia .) M N O (Dia .) Q R DRY WE T C O VE R

10 24 36 19 53 7438 111 2 2 1/2 1/2 30316 7/8 27 15 16 8 9 14 1200 1950 415(250) ( 600) (914) (483) (1346) ( 1889) (2819) (2) (50) ( 1/2) (1/2) (767) (22) (686) (381) (406) (203) (229) (356) (544) ( 884) (188)

12 24 36 19 53 7438 111 2 2 1/2 1/2 30316 7/8 27 15 16 8 9 14 1200 1950 415(300) ( 600) (914) (483) (1346) ( 1889) (2819) (2) (50) ( 1/2) (1/2) (767) (22) (686) (381) (406) (203) (229) (356) (544) ( 884) (188)

14 26 46 25 60 813

8 120 2 3 1/2 1/2 323

16 7/8 33 19 20 8 15 18 1700 3000 363(350) ( 660) (1168) (635) (1524) (2067) ( 3048) (2) (80) ( 1/2) (1/2) (817) (22) (838) (483) (508) (203) (381) (457) (771) (1361) (165)

16 30 46 26 66 8738 127 2 3 1/2 1/2 3778 1 34 19 20 8 15 18 1800 3100 530(400) ( 760) (1168) (660) (1676) (2219) ( 3226) (2) (80) ( 1/2) (1/2) (962) (25) (864) (483) (508) (203) (381) (457) (816) (1406) (240)

18 30 50 27 73 9438 133 2 3 1/2 1/2 3778 1 35 22 23 8 15 18 2600 4900 530(50) ( 760) (1270) (686) (1854) (2397) ( 3378) (2) (80) ( 1/2) (1/2) (962) (25) (889) (559) (584) (203) (381) (457) (1179) (2222) (240)

20 36 50 30 79 1 0038 144 2 4 1/2 1/2 4418 1 38 23 23 12 16 20 2900 5400 883(500) (910) (1270) (762) (2007) (2550) (3658) (2) (100) (1/2) (1/2) (1121) (25) (965) (584) (584) (305) (406) (508) (1315) (2449) (400)

24 40 64 32 87 1 0838 157 3 4 1/2 1/2 5158 138 40 29 30 12 16 22 4700 9 700 1205(600) (1010) (1626) (813) (2210) (2753) (3988) (3) (100) (1/2) (1/2) (1311) (35) (1016) (737) (762) (305) (406) (559) (2132) (4399) (546)

30 48 78 45 117 13838 200 3 4 1/2 1/2 5978 138 53 35 36 12 22 34 8600 14400 2015(760) (1210) (1981) (1143) (2972) (3515) (5080) (3) (100) (1/2) (1/2) (1521) (35) (1346) (889) (914) (305) (559) (864) (3900) (6531) (914)

36 58 96 53 140 16138 234 3 5 1/2 1/2 6978 138 61 44 46 12 24 40 14800 32000 3492(910) (1470) (2438) (1346) (3556) (4099) (5944) (3) (125) (1/2) (1/2) (1775) (35) (1549) (1118) (1168) (305) (610) (1016) (6712) (14512) (1584)

FA1 DIMENSIONS inches (mm) AND WEIGHTS pounds (kg)150# C lass flanges shown (For 300# dimensions and weights-contact factory)

PINSP ECTION

PORT(Dia.)

GBACKWASHPORT(Dia.)

H (NP T)DIFFERENTIAL(In Front)

J (NP T)VENT

F (NP T)DRAINL (4X)

BOLTHOLES

(Dia.)

MATERIALS OF CONSTRUCTION*-

(Carbon Steel Shown*)Body....... ........ ....... ......SA53 Gr B or SA106-BFlanges..................................................SA105Nozzles... .... .... ... .... .... ..SA53 G r B or SA106-B

Heads ..........................................SA234 WPBScreen1 ....... ........ ........ ........ .....SA240-304 SSBackwash Arm ....... ........ ....... ..SA 240-304 SSBearing1 ... ... .. ... .. ... .. ..Varies upon tempertature

G asket - C over1 .. .. .. ..Red rubber or BlueG uardG asket - Basket1 .... .... ... .G um R ubber or VitonG asket - Bearing1.... .... ... .G um R ubber or VitonPacking1 ..........................TFE or Cotton Nitrile

Stud................................................SA 193-B7Nut..................................................SA 194-2H

* Other Materials Available. Consult Factory.

1. Recommended S pare Parts

Materials specification will change dependent on

customer design contact factory for certified prints.

*Dimensions shown are subject to change. Contact factory for certified prints when required.

* See other screen sizes on page 105


5/7

AUTO

SELFC

LEAINING

STRAINERS

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INLET BODY F G H J K L WEIG HT

S IZE S IZE A B C D E (NP T) (Dia .) (NP T) (NP T) (B .C .) (Dia .) M DRY WET COVER

2 8 16 5 1738 3834 60 1/2 1 1/2 1/2 1334 9/16 13 310 329 50(50) (200) (406) (127) (441) (984) (1524) (1/2) (1) (1/2) (1/2) (349) (14) (330) (141) (149) (23)

3 8 16 5 1738 3834 62 1/2 1 1/2 1/2 1334 9/16 13 320 340 50(80) (200) (406) (127) (441) (984) (1575) (1/2) (1) (1/2) (1/2) (349) (14) (330) (145) (154) (23)

4 10 18 834 2378 52 76 1/2 1 1/2 1/2 16 9/16 2312 430 490 72(100) (250) (457) (222) (606) (1321) (1930) (1/2) (1) (1/2) (1/2) ( 406) (14) (597) (195) (222) (33)

6 12 2034 834 2958 5734 86 1/2 112 1/2 1/2 18 9/16 2312 560 670 103(150) (300) (527) (222) (752) (1467) (2184) (1/2) (112) (1/2) (1/2) (457) (14) (597) (254) (304) (47)

8 16 24 834 38 6534 100 1/2 112 1/2 1/2 21516 9/16 2312 875 1120 176(200) (400) (610) (222) (965) (1670) (2540) (1/2) (112) (1/2) (1/2) (541) (14) (597) (397) (508) (80)

*Dimensions shown are subject to change. Contact factory for certified prints when required.

FA2 DIMENSIONS inches (mm) AND WEIGHTS pounds (kg)150# C lass flanges shown (For 300# dimensions and weights-contact factory)

H (NPT)

DIFFERENTIAL

F (NP T)

DRAIN

L (4X)BO LT

HOLES(Dia. )

J (NPT)

VENT

G

BACKWAS H

(Dia. )

S TANDARD S TANDARDS IZE S CREEN MATERIALS

2-8 .125" (1/8") 304SS Wedge Wire

SCREEN OPENINGS*

Co nnections: 2"-8"RF, FF, RTJ or B uttw eld

FA2 SERIESFABRICATED AUTOMATIC


SPECIFICATIONStrainer shall be designed and manufactured to meet

ASM E B31.3 or ASM E B31.4 and/or ASM E Section

VI II, D iv I. The strainer body shall be 1-piece

construction, fabricated steel or other specifiedmaterial and inlet/outlet connections shall be In-Line

Design with a bottom backwash drain. The control

system shall be capable of automatically controlling

and monitoring the strainers operation. The strainer

shall have a fail-safe mode to prevent internal damage

from jamming of strainer shaft caused by large debris.

The strainer shall have a Nema 4 control panel with an

actuated valve to provide control of the backwash

flow. The screen shall be size _______ wedge wire

construction. The strainer shall have an inlet size of

____ and open area ratio of _______. The Automatic

Strainer shall be SSI FA2____.

MATERIALS OF CONSTRUCTION*-

(Carbon Steel Shown*)Body....... ........ ........ .....SA53 G r B or SA106-B

Flanges..................................................SA105Nozzles.... .... .... .... .... ... .SA 53 G r B or SA106-BHeads ..........................................SA234 WPBScreen1 ........ ....... ........ ........ .....SA240-304 SS

Backwash Arm ....... ........ ....... ..SA240-304 SSBearing1 .. .. ... .. ... ... .. ... Varies upon tempertatureG asket - Cover1 .. .. ..Red rubber or BlueGuardG asket Basket1 .... .... ... .G um R ubber or Viton

G asket - Bearing1 .. ..Red Rubber or BlueGuardPacking1 ..........................TFE or Cotton NitrileStud................................................SA 193-B7

Nut ................................................SA 194-2H

* Other Materials Availab le. Co nsult Fac tory

1. Recommended S pare Pa rts

Materials specification wil l change dependent on

customer design contact factory for certified prints.

S IZE P RES S URE

2" -8" 20 P S ID

MINIMUM INLET PRESSURE

(I/O Differentia l)

* See other screen sizes on page 105


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A U T O

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L E A I N I N G

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FA SERIESFABRICATED AUTOMATIC SELF-CLEANING STRAINERS

GENERAL OPERATION

Operation1. The unfiltered fluid enters the

strainer inlet into the lower

s ingle cha mb er. This cha m-

ber a cts to b oth s low the fluid

prior to straining and to

collect any settled debris.

2. The fluid pass es upward and

then rad ia lly o utwa rd through

the wedge wire straining

element. Deb ris la rge r then

the wedge wire slot size is

unable to pass through the

straining element.

3. The clean f luid c ontinues

through the properly propor-

tioned flow path and out the

strainer outlet.

4. The strainer is c ontrolled by an

electrical panel, an actuated

va lve a nd a differentia l press ure

sw itch. The clea ning cyc le ca n

be initiated manually or auto-

matically by a timer with a

differential pressure override.

5. When ba ckwashing is initiated

the moto r begins to s low ly turn

the backwash assembly (ap-

proximately 2 rpm) and simul-

taneously the backwash valve

is ope ned . The d ifferential pres-

sure between the line pressure

and atmosphere is the driving

force behind the backwashing

process.

6. The hollow tubular backwash

a ss embly, which is piped to the

atmosphere, slowly rotates in

close contact with the internal

straining element. Only a small

potion of the screen is isolated

allowing for uninterrupted

operation of the strainer during

the backwashing process.

7. The press ure differential ca uses

a large reverse flow across thescreen and into the tubular

ba ckwash a ssembly. The change

in velocity of the fluid entering

the backwas h as sembly creates

a vac uum a nd s uction, cleaning

the strainer element from the

inside. A port shoe, intercon-

necting the tubular backwash

assembly, optimizes the effec-

tiveness of this backwash jet

stream.

The S pence S tra iner Fa brica ted Automa tic S elf-

Cleaning Strainer utilizes the latest technology in

ba ckwa sh s trainer design.

The strainer clea ns itself using a ba ckwa sh s ystem

which is c ontinuous a nd/or controlled b y a n auto ma tic

control system. A tubular backwash assembly slowly

rota tes in close co ntac t w ith the internal wed ge-wire

stra ining e lement, iso la ting o nly a sma ll portion o f the

element a t any given time. Deb ris is removed by a

backwash flow which carries unwanted debris away

from the internal element and o ut of the stra iner. The

operation is deta iled a s follow s:

FLOW SCHEMATIC

1 1 12

2

3

3

3

7

8

8. Unwanted debris is ca rried into

the full port b a ckwa sh m a nifold

and out the backwas h connec-

tion. During the w hole opera tion

the flow remains uninterrupted

keeping flow loss at a mini-

mum.

9. Upon completion of the cycle ,

the control panel initiates turn-

ing the motor off and simul-

taneously clos ing the bac kwa sh

valve.

360 Degrees

Strained clean

continuous flow

Rotating

backwash arm

discharges

debris

Atmospheric pressure ensures efficiency

and minimizes power requirements

during the backwash cycle.

BACKWASH ASSEMBLY /STRAINING ELEMENT

INTERFACE

Two point p a rticle

contact minimizesplugging

&binding.

The d eb ris

dislodging force

is maximized by

conce ntrating all the

backwash flow momentum

into the slots.

BACKWASHCYCLE

STRAININGCYCLE


7/7

AUTO

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LEAINING

STRAINERS

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FA SERIESFABRICATED AUTOMATIC SELF-CLEANING STRAINERS

CONTROL SYSTEMS

The S pence S tra iner control panels a re de signed fo r

simple and relia ble opera tion. The de sign a llow s fo r

quick and easy field adjustments as required by theservice co nditions .

The FA S eries s trainers a re ma nufac tured c omplete

with our standard control systems. Optional custom

des igns to mee t spe cific c ustome r and/or service

req uirements ca n be furnished .

Standard Control System Components

contact factory for other options

- Nema 4X rated pa nel bo x UL/CS A a pproved

- Ca rbon steel, phospha te c oa ted w /grey

polyester powder coa ted pa nel box

- Adjustable timer

(1-10 min on time, 10 min 10 hr off time)

- Aluminum Nema 4 differential pressure override

sw itch (0-15 ps id)

- Control relay for backwash valve activation

- Three Indica tion pa nel lights Po wer on, Ba ck-

w a sh Va lve Ope n, High D ifferential P res sure

- S elec tor S witch fo r Hand(On)/Off/Auto service

- Motor starters with Auxiliary contact

- Terminal bloc k for exte rna l connec tions

- TEFC motor 110/120V, s ingle phase 60Hz, 1/3 Hp

- 110/120 VAC input

- Ca rbon ste el electrica lly a ctua ted b a ll valve for

ba ckwa sh (110/120 VAC/60 HZ) Nema 4

actuator

Modes of OperationThe se lecto r switch a llow s the cus tomer to e a sily

cha nge be tw een three mod es : OFF, AUTO (Automa tic

Intermittent), or HAND (Continuous).

Auto ma tic Intermittent (AUTO) When the selector

sw itch is in the AUTO position the st rainer operat es

with the a djusta ble timer. An a uthorized opera tor ca n

adjust the OFF time setting (the time after which it will

initiate backwash 10 min to 10 hour cycle) and ON

time setting (the time interval for which it will keep

bac kwa sh system ON 1 to 10 min cycle) by a djus ting

the timer.

The differentia l press ure switch should b e set a t 2 psig

over the a nticipated clean pressure drop. An a uthorized

opera tor ca n a djust OFF time s etting o n the d ifferentia l

pressure switch (the differential pressure at which it will

initiate ba ckwa sh range 0 15 ps id). This switch w ill

override the time cycle and initiate backwash should

the differential pressure rise above the programmed

setting. After the differential pressure has been

satisfied, the strainer will continue cleaning for 60seconds beyond that point.

The se ttings a re do ne depe nding o n the q uantity of

debris collected and limiting value of the differential

pressure. Experience will dictate the optimal

settings for the timers.

Continuous (HAND) When the selector switch is in

the HAND position the strainer will operate in a

continuous mode. In this mode the strainer will

backwash continuously with the backwash valve

open a nd the drive mo tor running. The continuous

ba ckwa sh mod e may b e des irab le or neces sa ry if the

insta lla tion experience s high so lid loa dings.

Ba ckwa sh Valve

Electrically actuated ball

valves suitable for water

service are standard on

all FA Control Systems.

Contact factory for other

options. Standard sizes

of backwash valves are

as follows :

Strainer Drain

Inlet/Outlet Valve

Size Size

2" - 4" 1"

6" - 8" 112"

10" - 12" 2"

14" - 18" 3"

20" - 36" 4"

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