Watts 0887511|WW0887511 - RK SS009-RT 1/2

This 1/2 inch total rubber parts repair kit is designed for a reduced pressure zone assembly to prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. This kit consists of a diaphragm, two molded disc assemblies, two seat O-rings, RV O-ring, two piston O-rings, RV stem O-ring, flow tube O-ring and cover O-ring.