WW0888597, Watts, 1/4-3/4 Backflow Complete Rubber Repair Kit, Ss009M3

This 1/4 to 3/4 inch total rubber parts replacement kit for series SS009M3 is used for repairing the parts to the relief valve used to prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage and or backpressure. This kit consists of a diaphragm, two disc assemblies, stem O-rings, cover O-ring, two seat O-rings, and RV seat O-ring.