Watts 0794020|WW0794020 - RK 709 S 4 LF LEAD FREE

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