Watts 0887521|WW0887521 - RK SS009M2-RT 1/4-3/4

This 1/4-3/4 IN complete rubber parts replacement kit for series SS009M2 is used for repairing the parts to the relief valve 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.