First Check Kit For 2 1/2 To 3 Inch Lead Free Double Check Detector Assembly, Series 007

This first check replacement kit is used to repair or replace the first check on a 2 1/2 to 3 inch lead free lead free double check detector assembly to prevent the backflow of contaminated water into the potable water supply. It consists of a seat, seat O-ring, disc assembly, spring, check cage and cover O-ring. It is ideal at referenced cross-connections identified as non-health hazard applications.