Backflow Reference Manual - Wilkins

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2 1/2", 3", 4", 6"


This is a double check assembly. Production began in 2011. This assembly is similar to the model 350A except the body is fabricated from stainless steel tubing. There is a single access cover for the check valves on the top. The cover is attached by a grooved end coupling. The check valves are a modular construction made of glass filled noryl. The 2 1/2"-6" size check modules are held in the body by retainer clips. The check valve of the 8"-10" size are bolted into the body. The check modules are repairable and spring tension does not need to be released for replacement of the check disc.


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.