Backflow Reference Manual - Cla Val

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D / D-EX


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


These models are both double check assemblies. The valve was produced from approximately 1958-1990. The 2" valve is of bronze body construction. The 2 1/2"-10" size is a cast iron body with a fused epoxy coating. The checks are the 3081 toggle lever type as used in the RP1 series. The model D and D-EX use the same internal parts. Check seats are replaceable. A seat removal tool is needed to change the seats. Check springs are not contained when the cover is removed. The serial number is needed to order some repair parts. Most internal hardware parts are made of bronze.


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.