The Reduced Pressure Principle Backflow Preventer shall be certified to NSF/ANSI 61, shall be ASSE® Listed 1013, rated to 180°F, and supplied with full port ball valves. The main body and access covers shall be low lead bronze (ASTM B 584), the seat ring and all internal polymers shall be Noryl™ and the seat disc elastomers shall be silicone. The first and second checks shall be at an angle and be accessible for maintenance without removing the relief valve or the entire device from the line. The checks shall share a single access cover and test cocks shall be accessible from the top of the device. If installed indoors, the installation shall be supplied with an air gap adapter. The Reduced Pressure Principle Backflow Preventer shall be a ZURN WILKINS Model 975XL3.
Compliance:
Massachusetts Approved, Meets the requirements of NSF/ANSI/CAN 61 and 372**(Less than 0.25% Weighted Average Lead Content), ASSE® Listed 1013, AWWA Compliant C511, CSA® Certified B64.4, cUPC®, C-UL® Classified, Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California
Features:
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지역 가용성
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