Overview of Primary Product
Zurn Industries, LLC | Wilkins
1747 Commerce Way, Paso Robles, CA U.S.A. 93446 Ph. 855-663-9876, Fax 805-238-5766
In Canada | Zurn Industries Limited
3544 Nashua Drive, Mississauga, Ontario L4V 1L2 Ph. 905-405-8272, Fax 905-405-1292
www.zurn.com
Rev. C
Date: 6/14
Document No. BF-975XL
Product No. Model 975XL
Model 975XL
Reduced Pressure Principle Assembly
Page 1 of 2
A
B
G
CD
F
E
Options
(Suffixes can be combined)
c - with full port QT ball valves (standard)
c L - less ball valves, male pipe thread
c U - with union ball valves
c MS - with integral relief valve monitor switch
c S - with bronze "Y" type strainer
c BMS - with battery operated monitor switch
c FDC - with fire hydrant connection; 2" only
c FT - with integral male 45° flare SAE test fitting
c TCU - with test cocks up
c V - with union swivel elbows (3/4" & 1")
c SE - with street elbows (3/4" & 1")
Accessories
c Air gap (Model AG)
c Repair kits
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
c Ball valve handle locks
Application
Designed for installation on 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 (less shut-off valves or with OS&Y valves
• C-UL® Classified
• CSA® Certified B64.4
• AWWA compliant C511
• Approved by the Foundation for Cross Connection
Control and Hydraulic Research at the University of
Southern California
• NYC MEA 425-89-M VOL 3
Materials
Main valve body Cast Bronze ASTM B 584
Access covers Cast Bronze ASTM B 584
Fasteners Stainless Steel, 300 Series
Elastomers Silicone (FDA Approved)
Buna Nitrile (FDA Approved)
Polymers Noryl™, NSF Listed
Springs Stainless Steel, 300 series
Features
Sizes: 3/4", 1", 1-1/4", 1-1/2", 2"
Maximum working water pressure 175 PSI
Maximum working water temperature 180°F
Hydrostatic test pressure 350 PSI
End connections Threaded ANSI B1.20.1
Relief Valve discharge port:
3/4” - 1” - 0.63 sq. in.
1 1/4” - 2” - 1.19 sq. in.
Dimensions & Weights (do not include pkg.)
! " # $ $ ! " # $ $ ! " # $ $ ! " # $ $ ! " # $ $ ! " # $ $ ! " # $ $ ! " # $ $ % & ' # ( )
* + , - . / - * . 0 1 * + , / 2 1 - / + 3 0 , * 1 4 * / + - 3 2 0 / - 1 / 4 / + 3 , / . / - 0 # 0
/ - 0 / * * * . 1 * + , / 2 1 - / + 3 0 , * 1 4 * / + - 3 2 0 / - 1 / 1 * + 3 , , / / , 4 # ,
/ / + , * - / 1 , * - / . / 0 + / 4 - 1 3 - * + , 1 . * / + - 3 2 0 / - 1 4 * + , / 1 / - - 2 + / 4 0 1 * - 3 / - # 1
/ / + - , . / 1 * + 3 , , / / . / 0 + / 4 - 1 3 - * + , 1 . * / + - 3 2 0 / - 1 4 * + , / 1 / - , / + / 4 4 / / - 3 / - # 1
- 0 . / 3 / + - , 1 . / . / 0 + / 4 - 1 3 - * + , 1 . * / + - 3 2 0 / - 1 4 * + , / 1 / - 4 / + - 4 1 * * , / 0 # ,