Watts 0887509|WW0887509 - RK 009SS VT 1/2

This 1/2 IN total relief valve replacement kit is used for repairing the parts to the relief valve series SS009 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 seat, seat O-ring, stem and diaphragm assembly, stem O-ring, cover O-ring and RV spring.