Backflow Reference Manual - Watts

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800M / 800CM


1/2", 3/4"


This is a pressure vacuum breaker assembly. Production began in 1986 and was discontinued in 2012. It has a one piece compact body design that incorporated the ball valves in the assembly body. The test cocks are located in the ball valve stem. The test cocks are a specially designed needle valve that requires turning of the test cock to operate. The 800CM model is the same as the 800M except it is chrome plated. The body is made of bronze. The check seat is cast in the body and is not replaceable. The check spring is contained when the bonnet is removed.


Common repair parts are a very small subset of the 10,000 plus items BAVCO stocks. Please feel free to contact us direct at 800-458-3492 for pricing on items not listed or backflow prevention devices.