Backflow Reference Manual - Toro

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PVB / 80-0550 / 80-0560


80-0550 - 3/4" 80-0560 - 1"


This is a pressure vacuum breaker assembly. Production began approximately 1977. The 3/4" was discontinued approximately in 2001. It is a celcon plastic bodied unit with ball valve shutoffs built into the assemblies body. The check seat is cast in the body and is not replaceable. There is spring tension from the check spring when the bonnet is unscrewed. Internal hardware parts are mostly made of plastic. The original model designation was PVB; it later adopted the separate model number for each size.


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.