Watts 0887503|WW0887503 - RK 009SS VT 1

This 1 inch total relief valve replacement kit is used for repairing the parts to the relief valve series SS009 which prevents the reverse flow of polluted water from entering into the potable water supply due to backsiphonage and or backpressure. This kit consists of a seat, seat O-ring, stem and diaphragm assembly, stem O-ring, cover O-ring, and RV spring.