Febco 825D and Febco 825YD are reduced pressure backflow assemblies. The model 825 was produced from 1975 to 1988. The 2 1/2"-10" check valve body was made of cast iron construction with an epoxy coating. The first years this valve was produced with some internal parts constructed out of aluminum causing premature decomposition. These parts were later redesigned to correct this problem. The 2 1/2"-3" have an uncontained check spring. The 4"-10" have a contained check spring. Some versions of the contained spring check assembly required the spring tension to be released to change the rubber check discs. A spring removal tool is required to release the spring tension. Check seats were replaceable and a seat removal tool was needed to replace the seats. The Febco 825D series was built from 1988-1989. The check valve utilizes the 805YD design of construction. The 2 1/2"-3" have uncontained check springs. The 4"-10" have a contained check spring design. The changes were that the body was made of ductile iron instead of cast iron and internal check parts are stainless steel instead of epoxy painted iron or bronze. The check bodies on 2 1/2"-10" were painted epoxy coated. In 1991 it was changed to a fused epoxy coating. The check seats are replaceable. In the Febco 825D the check seats are bolted in and a special tool is not needed to replace the seat. The relief valve on both models was the same; it is a side mounted relief valve assembly that attaches by a special bushing to the body and can be removed from the check body. The relief valve utilizes an external relief valve sensing line. Repair parts are the same for the 825 and the Febco 825D models.

This series is currently Obsolete!