WW0887905, Watts, 2-1/2 - 3 IN 709 DC First or Second Check Rubber Repair Kit

This 2-1/2 to 3 IN rubber parts kit for single check for series 709 helps to prevent the reverse flow of polluted water from entering into the potable water supply. This kit consist of a disc and a cover O-ring. It is ideal at referenced cross-connections identified in non-health hazard applications. Check with local inspection authorities for installation requirements.