Wilkins: 2 1/2" - 6" - Standard Relief Valve Repair Kit (Rubbers & Spring) for a 375 / 475 / 375A / 375AST / 475 / 475ST Reduced Pressure Zone Assembly
Kit Includes:
Relief Valve Diphram, Relief Valve Seat Disc, Upper Plunger O-Ring, Seat O-Ring, RV Piston O-Ring, and RV Spring
