Backflow Reference Manual - Lawler

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3/4", 1", 1 1/4", 1 1/2", 2", 2 1/2", 3", 4", 6", 8", 10"


This is a double check assembly. The 3/4"-2" size is a bronze bodied unit. Check springs are contained when the covers are removed. Springs tension has to be released for proper repair. It uses an in-line check design. The check seats are cast into the body and are not replaceable. The 2 1/2"-10" is a galvanized cast iron body. Check springs may not be contained when the cover is removed. A visual inspection is necessary before the cover is removed. Check seats are replaceable on these sizes.


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.