Backflow Reference Manual - Febco

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


This assembly is a reduced pressure principle assembly. Production began in 1989 and was discontinued in 2013. The check design utilizes the 805YD construction. The check bodies are made of ductile iron. From 1989-1990 the bodies were coated with a painted epoxy coating. In 1991 they switched to a fused epoxy coating. Internal check hardware is stainless steel. The 2 1/2"-3" have uncontained check springs. The 4"-10" sizes have contained check springs. Check seats on all sizes are bronze and replaceable. The relief valve design was changed from the 825/825D design. The relief valve mounts on the side of the check body and can be detached from the check body. The relief valve can be mounted on either side of the check body. The relief valve utilizes an external relief valve sensing line. The relief valve has a contained spring and a replaceable seat. The relief valve spring tension must be released for a proper repair.


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.