Backflow Reference Manual - Watts

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


This is a reduced pressure assembly. Production began in 1998. The 3"-6" was discontinued in 2003. The 1/2"- 1 1/2" was discontinued in 2009. In the 1/2"-1 1/2" size the body is made of copper tubing which is nickel plated. There is a single cover for the checks. The checks are modular in construction so the springs will be contained and the seats are replaceable. The check modules thread into the body. The relief valve is attached to the check body by a union and utilizes an external sensing line. The 3"-6" size utilizes a stainless steel body. The checks are modular and are accessed from the single access cover. The checks are repairable and screw into the body. The relief valve is pressurized from an external sensing line. The relief valve is mounted between the two checks and is located under the cover.


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.