Specification Sheet

Zurn Industries, LLC | Wilkins
1747 Commerce Way, Paso Robles, CA U.S.A. 93446  Ph. 855-663-9876, Fax [phone]
In Canada | Zurn Industries Limited
3544 Nashua Drive, Mississauga, Ontario L4V 1L2  Ph. 905-405-8272, Fax [phone]
www.zurn.com
Rev. C
Date: 10/14
Document No. BF-975XL(SM)
Product No. Model 975XL(SM)
Model 975XL
Reduced Pressure Principle Assembly
Back ow Prevention Assembly
Page 1 of 2
Options
(Suffixes can be combined)
c - with full port QT ball valves (standard)
c L - less ball valves, male pipe thread
c S - with bronze "Y" type strainer (1/2” only)
c TCU - with test cocks up
c FT - with integral male 45° flare SAE test fitting
c PF - with Z-Bite™ push fit connections* (1/2" only)
c PR - with Z-Press™ press fit connections* (1/2" only)
*Fittings ship in box with valve and must be threaded into
valve by hand on site.
Accessories
c Air gap (Model AG)
c Repair kits (rubber only)
c Thermal expansion tank (Mdl. XT)
c Soft seated check valve (Model 40XL)
c Shock arrester (Model 1250XL)
c QT-SET Quick Test Fitting Set
Application
Designed for installation on water lines to protect against both
backsiphonage and backpressure of contaminated water into
the potable water supply. The Model 975XL provides protec-
tion where a potential health hazard exists.
Standards Compliance
• ASSE® Listed 1013
• IAPMO® Listed
• CSA® B64.4
• Approved by the Foundation for Cross Connection
Control and Hydraulic Research at the University of
Southern California
Materials
Main valve body Cast bronze ASTM B 584
Access covers Cast bronze ASTM B 584
Internals Stainless steel, 300 Series
Elastomers Silicone (FDA approved)
Buna nitrile (FDA approved)
Polymers Noryl™, NSF Listed
Springs Stainless steel, 300 series
Features
Sizes: 1/4", 3/8", 1/2”
Maximum working water pressure 175 psi
Maximum working water temperature 180° F
Threaded connections (FNPT) ANSI B1.20.1
Hydrostatic test pressure 350 PSI
Relief Valve discharge port:
1/4” - 1/2” - 0.38 sq. in.
A
G
B
CD
F
E
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Dimensions & Weights (do not include pkg.)