WW0886005, Watts, 3/4-1 Backflow Dual Check Repair Kit, L7-T

This in-line testable and serviceable dual check valve repair kit made to prevent the reverse flow of polluted water from entering into the drinking water supply at the service entrance or at individual outlets. It consists of two disc assemblies, two springs, and two cover seal O-rings and two union O-rings. It is designed for non-health hazard residential water system containment, continuous pressure applications and is installed immediately downstream of the residential water meter. Check with local inspection authorities for installation requirements.