4S-600 / DCDA / DCDA-4S / DCDA-4SG


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


This is a double check detector assembly. Production began in 1999. Both model designations 4S-600 or DCDA have been used on this assembly. The main assembly is similar to the 4S-100 series of double check. The bypass assembly uses a 1/2" 4S-100/DC. In 2008 the DCDA-4SG Model was produced in sizes 2 1/2"-8". The G designation referred to the groove end check body as opposed to the flanged end body. All internal repair parts are the same. There were some dimensional differences between the flanged and grooved end units.


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.