Specifications

32
Tech Support: 855-ONE-ZURN
www.zurn.com
Reduced Pressure Principle 975XL Series
• 1/4”, 3/8”, 1/2”
• Reduced pressure principle backflow preventer consisting of a pressure
differential relief valve located between two independently operated
spring-loaded center guided check valves
• Complete with two full port resilient seated ball valves for shut-off and
four resilient seated ball valve test cocks
• Bronze body construction
• Noryl
®
replaceable seats
• Silicone check valve discs standard
• Entire unit serviceable in line
• Temperature range 33°F – 180°F
• Maximum pressure 175 psi
• Available with stainless steel handles (optional)
• ASSE
®
Listed 1013, IAPMO
®
Listed, CSA
®
Certified
• Approved by the Foundation for Cross-Connection Control and Hy-
draulic Research at the University of Southern California
Model 975XL FNPT x FNPT end connections
Model 975LXL Less shut-off valves
Model 975XFT Supplied with fast-test test cocks
Model 975XLS Supplied with wye strainer (1/2” only)
Model 975XLSH Supplied with stainless steel handles
Model 975XLTCU Supplied with test cocks up
Model 975XLST Supplied with stainless steel body, test cocks,
and shut-off valves (3/8” and 1/2”). California
AB 1953 compliant
For Additional Information, reference WK-BPC catalog or
visit our web site.
OptionsTypical InstallationX Ref Features Applications
The 1/4” to 1/2” 975XL was designed for installation in very tight locations. Typically, high hazard
applications such as beverage machines require installation in small, inaccessible areas. With the
975XL’s top access to the checks, it is much easier to repair than “wye” pattern designs when in
difficult assembling areas. Designed to prevent backpressure and backsiphonage of contaminated
water into the public potable supply, the1/4” to 1/2” 975XL is ready for the challenge.
 Air gap (Model AG-8)
 wye strainer (Model S)
 Thermal expansion tank (Model XT)
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”
(305mm) and a maximum of 30” (762mm) 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.
 Test cock lock (Model TCL24)
 Soft seated check valve (Model 40XL)
 Water hammer arrestor (Model 1250)
Accessories
12" MIN.
MODEL 975XL
30" MAX.
DIRECTION OF FLOW.
AIR GAP
MODEL AG
DRAIN
WILKINS WATTS CONBRACO FEBCO AMES HERSEY
975XL 009QT, 995, 909QT, 40-200-T2 825Y, 860 400B FRPII
909M1QT, 919
975LXL 009LF 40-200-T1
975XLS 009QTS, 909QTS,
909M1QTS
975XLST SS009 40-200-T2S
Backflow Preventers