---, ri an Backflow Specialties 0) 66:- KFLO (619) 527-2525 Fax: (619) 527-2527

www.americanhackjlow.com

FEATURES Maximum working water pressure Maximum working water temperature Threaded connections (FNPT)

OPTIONS

175 psi 180° F ANSI 81 .20.1

D - with full port ball valves (standard) D L - less shut-off valves D S - with bronze "Y" type strainer (1/2" only) D TCU - with test cocks up

D FT - with integral male 45° flare SAE test fitting

ACCESSORIES

D Air gap (ModelAG) D Repair kit (rubber only) D Thermal expansion tank (Model WXTP) D Soft seated check valve (Model 40) D Shock arrester (Model 1250) D QT-SET Quick Test Fitting Set

FLOW CURVES

~ -~ 1/4"

~ - 3/8" - -~

~

1/2" --

'-'._nTes::t~

6 9 12 15 0 Rated Flow (Established by approval agencies)

DIMENSIONS---------- & WEIGHTS SIZE A B c D E F G W/BVUBV 1/4 9 1/2 5 3/4 1 1/2 2 3/4 2 4 N/A 7 6 3/8 9 1/2 5 3/4 1 1/2 2 3/4 2 4 N/A 7 6 1/2 10 5 3/4 1 1/2 2 3/4 2 4 13 1/2 7 6

WILKINS a lili!!J. company

Model 975XL Double Check Valve Assembly

1 /4" to 1 /2" APPLICATION

Designed for installation on potable water lines to protect against both backsiphonage and backpressure of contami­nated water into the potable water supply. The Model 975XL provides protection where a potential health hazard exists.

STANDARDS COMPLIANCE

• ASSE® Listed 1013

• IAPMO® Listed

• CSA® Certified • USC FCCC & HR

MATERIALS

Main valve body Access covers Internals Elastomers

Polymers Springs

Cast bronze ASTM B 584 Cast bronze ASTM B 584 Stainless steel, 300 Series Silicone (FDA approved) Buna nitrile (FDA approved) Noryl™, NSF Listed Stainless steel, 300 series

TYPICAL INSTALLATION Local codes shall govern installation requirements. To be installed in accordance with the manufacturers' instructions and the latest edition of the Uniform Plumbing Code. Un­less otherwise specified, the assembly shall be mounted at a minimum of 12 inches and a maximum of 30 inches above adequate drains with sufficient side clear­ance for testing and maintenance. The installation shall be made so that no part of the unit can be submerged or where relief valve discharge could cause damage.

INDOOR INSTALLATION

DIRECTION OF FLOW. c:;)

· ~n Backflow Specialties 0) 66;. KFLO (619) 527-2525 Fax: (619) 527-2527

www.americanbackjlow.com

FEATURES

Maximum working water pressure Maximum working water temperature Hydrostatic test pressure End connections Threaded

OPTIONS

175 PSI 180°F 350 PSI ANSI B1 .20.1

D - with full port QT ball valves (standard) D L - less ball valves D U - with union ball valves D MS - with integral relief valve monitor switch D P - for reclaimed water systems D S - with bronze "Y" type strainer D BMS - with battery operated monitor switch D FDC - with fire hydrant connection; 2" only D TCU - with test cocks up D V - with union swivel elbows D SE - with street elbows D D

RV - with test cocks supplied on the opposite side

FT - with integral male 45° flare SAE test fitting

ACCESSORIES

D Air gap (Model AG) D Repair kit (rubber only) D Thermal expansion tank (Model WXTP) D Soft seated check valve (Model 40) D Shock arrester (Model 1250) D QT-SET Quick Test Fitting Set

DIMENSIONS & WEIGHTS

UNION

WILKINS a tJiilij. company

Model 975XL Double Check Valve Assembly

3/4" to 2" APPLICATION

Designed for installation on potable water lines to protect against both backsiphonage and backpressure of contami­nated water into the potable water supply. Assembly shall provide protection where a potential health hazard exists.

STANDARDS COMPLIANCE

• •

ASSE® Listed 1013

IAPMO® Listed

• •

UL® Classified (lessshut-offvalvesorwithOS&Yvalves)

C-UL® Classified

• CSA® Certified

• AV\tWACompliantC511

• USC FCCC & HR

MATERIALS

Main valve body Access covers Fasteners Elastomers

Polymers Springs

Cast Bronze ASTM B 584 Cast Bronze ASTM B 584 Stainless Steel, 300 Series Silicone (FDAApproved) Buna Nitrile (FDAApproved) Noryl™, NSF Listed Stainless steel, 300 series

TYPICAL INSTALLATION

Local codes shall govern installation requirements. To be installed in accordance with the manufacturers' instructions and the latest edition of the Uniform Plumbing Code. Un­less otherwise specified, the assembly shall be mounted at a minimum of 12 inches and a maximum of 30 inches above adequate drains with sufficient side clearance for test­ing and maintenance. The installation shall be made so that no part of the unit can be submerged.

SIZE A A BVs B LIBVs C D E F G L\BVsW\BVs

3/4 12 14 7 3/4 2 1/8 3 3 1/2 5 15 3/4 10 12 1 13 14 1/4 7 3/4 2 1/8 3 3 1/2 5 17 3/4 10 14

1 1/4 17 19 10 15/16 2 3/4 3 1/2 5 6 3/4 22 22 28 1 1/2 17 3/8 20 10 15/16 2 3/4 3 1/2 5 6 3/4 23 1/8 22 28

2 18 1/2 21 1/4 10 15/16 2 3/4 3 1/2 5 6 3/4 25 1/2 22 34