Watts 0887905|WW0887905 - RK 709 RC4 2-1/2 TO 3

This 2 1/2-3 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.