Backflow Reference Manual - SMR

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


The DHC was a double check assembly produced from approximately 1960 to 1976. The body is of bronze construction and has a modularized in-line check design. Check seats were replaceable and the design utilized contained springs when the cover was removed. Spring tension had to be released to perform a proper repair.


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.