Watts 0794015 - LFRK 709-CK4-4 - 4" Lead Free First or Second Check Kit for Double Check Valve Assembly

This check valve kit is used to repair or replace the first or second check valve on a 4 inch lead free double check valve assembly and used to prevent the reverse flow of polluted water from entering into the potable water supply. This kit consists of a disc and spring assembly and a cover O-ring. It is ideal at referenced cross-connections identified in non-health hazard applications.