Read MAIN-INDEX-PAGE.psd text version

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Backflow Specialties

(619) 527-2525

Fax: (619) 527-2527

(800) 66-BKFLO

www.americanhackflow.com

WILKINS w.

a company

Model 550 Double Check Valve Assembly Backflow Preventers 314" to 2"

APPLICATION

The WlLKlNS Model 550 Double Check Valve Backflow Preventer has been designed for installation in potable water lines where a potential health hazard does not exist. WILKINS' low head loss makes the device most suitable where system pressures are low or where it is important to hold pressure loss to a minimum.

LOW HEAD LOSS Lowest in industry LOW MAINTENANCE COSTS No special tools required to service units Few moving parts In-line serviceability CAST BRONZE MAINCASE Sturdy, durable, corrosion resistant POPPET TYPE CHECK VALVES Independently operated Stainless steel springs COMPACT SIZE Easy to install

TY PEAL INSTALLATION

Install with minimum clearance of 12" from floor or grade. Install with adequate side clearance for testing and maintenance. Protect from freezing. If installed in pit or vault consult local codes; provide adequate drainage.

OPTIONS

Suffix (options can be combined) B -with full port resilient seated ball valves S - with bronze " Y strainer U - with union connections L - without shut-off valves

/

DIMENSIONS & WEIGHTS

DIMENSONS (INCHES)

Neptune Richwell. SMR

FLOW CURVES

MODEL 550 3/4" to 2"

-

I

FLOW RATE US. GPM

I

FLOW RATE U S GPM

PRESSURE-TEMPERATURE

Suitable for supply pressure up to 150 PSI and water temperatures from 33°F to 140°F.

MATERIALS

All corrosion resistant Cast bronze maincase Stainless steel springs Rubber check valve discs Stainless steel bolts

PURPOSE

The WlLKlNS Model 550 Double Check Valve Backflow Preventer consists of a main body with two check valves. The check valves are spring loaded and operate independently.

American Backflow Specialties

www.arnericanhackcJlow. corn

(800) 66-BKFLO (619) 527-2525 Fax: (619) 527-2527

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mencan Backfow Specialties

. ,

(800) 66-BKFLO

(619) 5252525

Fax: (619) 527-2527

www.americanhackflow.com

REPAIR KITS MODEL 550 Sizes 314" to 2"

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f

n

NO. RK-001

REPAIR KIT COMPLETE Model 550 ~ 4 ~3 ' Onlv ~1"

INO. RK-002

I

554-12 152N 554-33 2

2

REPAIR KIT COMPLETE Model 550 1~ 4 " 1%". 2 Onlv .

3

I

11

552-12 037N 552-33 146N

2

SEAL RING, POPPET O-RING. COVER (BOLT ON1 SPRINGS O-RING, COVER (SCREW ON) RUBBER REPAIR KIT Model 550 & 575 %" & 1" Onlv

SEAL RING, POPPET O-RING. COVER SPRINGS

2 2 2

I

11

2

NO. RK-007

NO. RK-008

RUBBER REPAIR KIT Model 550 & 575 1W, 1M",2" Onlv

1554-12 037N

/

1

2 2

/ SEAL RING, POPPET

10-RING,

COVER

1

2

10-RING,

COVER (BOLTON)

I

152~

INDIVIDUAL PARTS MODEL 550 Sizes 314" to 2"

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BALL VALVE, TAPPED 2 GATEVALVE BALL VALVE 3 4 5 6 POPPET ASSEMBLY POPPET SCREW WASHER SEAL RING

552B-48T 552A-48

5538-48T 553A-48

5548-48T 554A-48

5558-48T 555A-48

5568-48T 556A-48

1

552B-48 552-300 552-11B 552-14 552-12

1

5538-48 552-300 552-11B 552-14 552-12

1

554B-48 554-300 554-11 554-14 554-12

1

5558-48 554-300 554-11 554-14 554-12

1

5568-48 554-300 554-11 554-14 554-12

8

POPPET SPRING

552-33 037N 146N 5752-3 5752-3B 5752-1 1 552-11A 552-48R 552-3 552-38

552-33 037N 146N 5752-3

554-33 152N NIA 5754-3 NIA 554-11A 552-11A 554-48R 554-3 NIA

554-33 152N NIA 5754-3

554-33 152N NIA 5754-3

9

0 RING, COVER (BOLT ON) 0 RING, COVER (SCREW ON)

10

NO. 1 CHECK C ~ V E R (BOLT ON)

I NO. 1 CHECK COVER (SCREW ON) 1

11 12 13 14 COVER SCREW BLEED SCREW TESTCOCK NO. 2 CHECK COVER (BOLT ON) NO. 2 CHECK COVER (SCREW ON)

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1

5752-3B 5752-11 552-11A 552-48R 552-3 552-3B

I

NIA 554-11A 552-11A 554-48R 554-3 NIA

I

NIA 554-11A 552-11A 554-48R 554-3 NIA

Neptune Richwell. SMR

WILKINS a

company

Model 550 Double Check Valve Assembly 2-112" to 6"

APPLICATION FEATURES

LOW HEAD LOSS Lowest in industry LOW MAINTENANCE COSTS No special tools required to service units COMPACT SIZE Easy to install MODULAR DESIGN Unitized spring assembly for safety One piece sleeve and seat EPOXY COATED MAINCASE Fusion coated inside and outside Corrosion Resistant (FDA Approved) The WlLKlNS Model 550 Double Check Valve Backflow Preventer has been designed for installation in potable water lines where a potential health hazard does not exist. WILKINS' low head loss makes the device most suitable where system pressures are low or where it is important to hold pressure loss to a minimum.

TYPICAL INSTALLATION

Install with minimum clearance of 12" from floor or grade. Install with adequate side clearance for testing and maintenance. Protect from freezing. Install adequate support blocks. If installed in pit or vault consult local codes; provide adequate drainage.

OPTIONS

(Options can be combined) Suffix R - with resilient wedge shut-off valves FS - with flanged strainer FSC - with epoxy coated flanged strainer ROS&Y - with resilient wedge OS & Y shut-off valves L - without shut-off valves

DIMENSIONS & WEIGHTS

American Backflow Specialties

www.arnericanhackcJlow. corn

(800) 66-BKFLO (619) 527-2525 Fax: (619) 527-2527

e

mexa'n Backflow Specialties

.,

(800) 66-BKFLO

(619) 5252525

Fax: (619) 527-2527

www.americanhackflow.com

FLOW CURVES

20

Model 550 2-1/2" to 6"

2 15 -

-

q 10

cc Y

V)

0

FLOW RATE U S GPM

8

2 5

0 0 400 800 1200 1600 2000

B

FLOW RATE U S GPM

MATERIALS

All corrosion resistant Epoxy coated (FDA Approved) maincase inside and outside Brass poppet type check valvesunitized spring assembly, independently operated, stainless steel springs One piece brass sleeve and seat-

PURPOSE

The WlLKlNS Model 550 Double Check Backflow Preventer consist of a cast iron (epoxy coated) maincase with two independently operated spring-loaded poppet type check valves.

PRESSURE-TEMPERATURE

R~chwell, SMR

Suitable for supply pressure up to 150 PSI and water temperatures from 33OF to 11O°F.

REPAIR KITS MODEL 550 2-112" TO 6"

C

--- 2

-

NO. RK-011

REPAIR KIT Model 550 & 575 2M" & 3"

I

RK-O1

558-12 341N 353N

SEAL RING O-RING, SMALL O-RING, LARGE

559-12 426N 439N

2

SEALRING O-RING, SMALL O-RING, LARGE

5510-12 439N 448N

2

SEAL RING O-RING, SMALL O-RING, LARGE

2 4

2 4

2

4

I

7

INDIVIDUAL PARTS MODEL 550 2-112" TO 6"

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-

1

GATE VALVE, TAPPED RESILIENT SEAT GATE VALVE OS&Y, TAPPED RESILIENT SEAT

1 1

557A-48TR 557A-48TR OS&Y 557A-48R 557A-48R OS&Y 558-11D 558-9 557-13 558-3A 031N 558-11B 5758-9 341N 353N 558-11A 558-2 558-11 558-14 558-12 Note 558-3 558-11E 558-7 721B-48 101-21 B 558-21B 604C-12

1 1

558A-48TR 558A-48TR OS&Y 558A-48R 558A-48R OS&Y 558-11D 558-9 558-13 558-3A 031N 558-11B 5758-9 341N 353N 558-11A 558-2 558-11 558-14 558-12 Note 558-3 558-11E 558-7 721B-48 101-21B 558-21B 604C-12

1 1

559A-48TR 559A-48TR OS&Y 559A-48R 559A-48R OS&Y 559-11 558-9 559-13 558-3A 031N 558-11B 5758-9 426N 439N 558-11A 559-2 559-11B 559-14 559-12 559-300 559-3 559-11A 558-7 7218-48 101-21B 558-21B 72C-12

1 1

551OA-48TR 551OA-48TR OS&Y 5510A-48R 5510A-48R OS&Y 5510-11 5510-9 5510-13 558-3A 031N 558-11B 5758-9 439N 448N 724-11A 5510-2 552-11B 5510-14 5510-12 5510-300

. 5510-3A

2

GATEVALVE RESILIENT SEAT GATE VALVE, OS&Y RESILIENT SEAT

1 1 8 8 2

1

1 1 8 8 2 1 1 2 2 2 4 2 2 2 2 2 1 2 8 3 4 2 2 2

1 1 16 16 2 1 1 2 2 2 4

1 1 16 16 2 1 1 2 2 2 4 2 2 6 2 2 2 2 12 3 4 2 2 6

3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

BOLT NUT GASKET COVER PLATE O-RING STUD NUT O-RING (SMALL) O-RING (LARGE) SCREW SLEEVE SCREW (POPPET) RETAINING PLATE SEAL RING POPPET ASSY. COVER BOLT PIPEPLUG TESTCOCK NIPPLE, SHORT NIPPLE, LONG WASHER

1 2 2 2 4 2 2 2 2 2 1 2 8 3 4 2 2 2

2

2

6

2 2 2 2 12 3 4 2 2 6

5510-11A 5510-7 5528-48 102-21B 5510-21B 604C-12

Note: SPRING #558-33, POPPET #558-300

American Backflow Specialties

www.arnericanhackcJlow. corn

(800) 66-BKFLO (619) 527-2525 Fax: (619) 527-2527

. ,

r n e z g n Backflow Specialties

(800) 66-BKFLO (619) 5252525

Fax: (619) 527-2527

www.americanhackflow.com

WILKINS w.

a company

Model M6-550, M8-550, M I 0-550 Double Check Valve Assembly 2-112~~ I0" to

APPLICATION

Designed for installation in potable water lines where a potential health hazard does not exist.

FEATURES

In-line serviceability Additional flow capacity Lowest head loss in the industry No special tools required to service units Easy to install Unitized spring assembly for safety One piece sleeve and seat

INSTALLATION

Install as below, while following local codes.

FLOW CURVES

CONFIGURATION

M6-550 - 6" x 3" x 3" Two 6" wyes with two 3" Model 550 Double Check Backflow Preventers M8-550 - 8" x 4" x 4" M10-550 - 10" x 6" x 6"

I

PRESSURE TEMPERATURE Suitable for supply pressure up to 150 PSI and water temperatures from 33°F to 110°F.

-

I DIMENSIONS (INCHES) I N R S ~ - ~ .W~i ~ ~ ~ , FZ F

PURPOSE

The WlLKlNS Model M550 Series consists of two cast iron wyes for the inlet and outlet connections and two Model 550 Double Check Valve Backflow Preventers. Each unit shall operate independently and can be serviced without the necessity of shutting off flow through the other unit.

MATERIALS

All corrosion resistant Epoxy coated (FDA Approved) maincase inside and outside Brass poppet type check valvesN , unitized spring assembly, independently Richwell, SMR operated, stainless steel springs One piece brass sleeve and seateasy to remove

WILKINS a

ZuRNZURN company

Model 550 DCDA Double Check Detector Assembly 2-112" to 6"

APPLICATION FEATURES

Lowest head loss in the industry No special tools required to service units Easy to install Unitized spring assembly for safety One piece sleeve and seat Fusion coated inside and outside Corrosion resistant (FDA Approved)

/

The WlLKlNS Model 550 DCDA Backflow Preventer has been designed for installation in potable water lines where a potential health hazard does not exist. The by-pass line assembly consists of a water meter in series with a WlLKlNS Model 550 Double Check Backflow Preventer.

Repair Info: The assembly is a Model 550 Double Check. Repair kits & parts can be found on Model 550 product pages. Repair kits for the DCDA can be found following Model 575 product pages.

DIMENSIONS & WEIGHTS

TYPICAL INSTALLATION

Install with minimum clearance of 1 2 from floor or finished grade. Leave room for testing and maintenance, protect from freezing, and allow for adeENCLOSURE

RAIN

OPTIONS

Suffix (options can be combined) R - with resilient wedge shut-off valves FS - with flanged strainer FSC - with epoxy coated flanged strainer ROS & Y - with resilient wedge OS & Y shut-off valves L - without shut-off valves

PRESSURE-TEMPERATURE

Suitable for supply pressure up to 150 PSI and water temperatures from 33°F to 110°F.

I

100

" O

200

FLOW RATE

- U.S. CPM

300

MATERIALS

All corrosion resistant Epoxy coated (FDA Approved) maincase inside and outside Brass poppet type check valves-unitized spring assembly, independently operated Stainless steel springs One piece brass sleeve and seat-easy to remove By-pass unit consists of cast bronze maincase

I

0

400

800

FLOW RATE- U.S GPM

1200

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American Backjlow Specialties www.americanback$?ow.com

(800) 66-BKFLO (619) 527-2525 Fax: (619) 527-2527

Information

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