The Double Check Type Backflow Preventer shall be certified to NSF/ANSI/CAN 61, shall be ASSE Listed 1015, rated to 180°F, and supplied with full port ball valves. The main body and access cover 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 check shall be located at an angle and accessible for maintenance from the top of the device, without removing the device from the line. The checks shall share a single access cover and test cocksshall be accessible from the top of the device. The Double Check Type Backflow Preventer shall be a ZURN
WILKINS Model 950XL3
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