What is a backflow assembly?
April 3, 2025Backflow assemblies are devices placed on cross connections to prevent water from backflowing into the public water system. The most common type of backflow assembly is a double check valve assembly, which consists of two independent check valves, two resilient seated shut off valves and test cocks. To ensure they work correctly, all backflow assemblies must be tested annually with the exception of atmospheric vacuum breakers.
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