Backflow Reference Manual - Watts

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774 DCDA / 774X DCDA


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


This is a double check detector assembly. In 1997 the Watts Company purchased the Ames Company. In 1998 Watts began marketing the Ames 3000SS as the Watts 774 DCDA and the Ames 3000SE as the Watts 774X DCDA. The body is made of stainless steel. The model utilizes a modular check design so the springs will be contained when the cover is removed. The main valve is similar to the Watts model 774. In the 2 1/2"-6" size the check assemblies are not field repairable and the whole check module must be replaced for an average repair. The bypass assembly will be either the Watts 007 M2 or the Watts 007 M3. Be sure to notice if you have the model 774 DCDA or the 774X DCDA as the parts will be different. The 774XDCDA models were discontinued in 2001. The 8"-10" check does have a rubber disc that is field replaceable.


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.