Watts RK 957 RT-RS 2 1/2" - 4" 0889373

Watts 2 1/2" - 4" 957 repair kit- rubber total. Kit includes first and second check module o-rings, two red silicone (RS) disc elastomers, two e-clips, relief valve diaphragms, relief valve inlet coupler o-ring and relief valve piston assembly.