Watts RK957-957RPDA-RT-RS 0889373 2-1/2 inch Through 4 inch Lead Free Backflow Preventer Complete Rubber Parts Repair Kit

Fits 2-1/2 inch 957, 2-1/2 inch 957RPDA, 3 inch 957, 3 inch 957RPDA, 4 inch 957, and 4 inch 957RPDA

Consists of First And Second Check Module O-Rings, 2 Red Silicone Disc Elastomers, 2 E-Clips, Relief Valve Diaphragms, Relief Valve Inlet Coupler O-Ring And Relief Valve Piston Assembly