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C510-07 Double Check Valve Backflow Prevention Assembly

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Revision Date:
Updated On: October 22, 2013
Editorial Change:
This standard covers the double check valve backflow prevention assembly. The assembly shall be for operation on hot or cold water lines and capable of withstanding a working water pressure of at least 150 psi (1,034 kPa) without damage to working parts or impairment of function. This standard covers hot and cold water double check valve backflow prevention assemblies. All assemblies shall be designed to operate at a minimum temperature range of 33 degrees F to 140 degrees F (1 degree C to 60 degrees C). Hot water assemblies shall be designed to, at a minimum, operate in water at a temperature range of 33 degrees F to 180 degrees F (1 degree C to 82 degrees C). A complete assembly consists of two internally loaded, independently operating check valves, located between two tightly closing resilient-seated shutoff valves, with four properly placed resilient-seated test cocks.

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