Watts 0794015|WW0794015 - RK 709 CK4 4 LF LEAD FREE

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