RK212-375 (Wilkins) | 2-1/2 - 6 Inch | 375/475 RP Complete Relief Valve Rubber Repair Kit With Spring

This is 2-1/2 to 6 Inch Zurn Wilkins 375/475 Series Reduced Pressure Zone Backflow Preventer Complete Relief Valve Rubber Repair Kit With Spring. Kit Includes Relief Valve Diphram, Relief Valve Seat Disc, Upper Plunger O-Ring, Seat O-Ring, RV Piston O-Ring, And RV Spring. | Wilkins | RK212-375