0887297 (Watts) | 1/4 - 1/2 Inch | 009 Inch | RP Total Rubber Repair KitThis 1 4 to 1 2 Inch 009 RP Complete Rubber Parts Replacement Kit 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 Watts 0887297