Backflow Reference Manual - Wilkins

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


This is a double check assembly. Production began in 2022. The body is made of a lead free bronze alloy. A single bolted cover allows access to both check assemblies from the top. The springs are contained when the cover is removed. Both checks are attached to each other and come out of the body in one cartridge. The two check assemblies are disassembled by holding the cartridge and twisting the 2nd check spring retainer releasing the 2nd check and then twisting the 2nd check seat to release the first check assembly. The check discs are made of silicone rubber. The hardware plasic parts of the check cartridge are made of Noryl.


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.