WW0888070, Watts, 1/2-3/4 Backflow Repair Kit, First Check, Ss007M3

This 1/2-3/4 IN first check replacement kit, for series SS007M3, is used to prevent the backflow of contaminated water into the potable water supply. It consists of a seat, seat O-ring, disc assembly, and spring, check cage and cover O-ring. It is ideal at referenced cross-connections identified as non-health hazard applications. Check with local inspection authorities for installation requirements.