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Backflow Reference Manual - Conbraco/Apollo

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2 1/2", 3", 4", 6", 8", 10", 12"


The 4A-600 series is a double check detector assembly. Production began in 2008. The mainline assembly is a DC similar to the 4A-100 series. There are two different types of bypass assemblies, either type I or type II. The type I bypass utilizes an assembly similar to the 4A-100 series. The type II bypass utilizes a specially constructed single check assembly only.


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.