Backflow Reference Manual - Conbraco/Apollo

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40-500 / PVB-40


1/2", 3/4", 1", 1 1/4", 1 1/2", 2"


This is a pressure vacuum breaker assembly. Production began in 1991 and was discontinued in 2003. It is a bronze bodied unit. The check seat is cast in the body and is not replaceable. The check spring is contained when the bonnet is removed. Note each size has a different model number, but they are all in the 40-500 series.


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.