WW0794016, Watts, Fourth Check Repair Kit For 6 In Lead Free Double Check Valve Assembly

This fourth check valve kit is used to repair or replace the fourth check valve on a 6 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.