Watts 757NDCDA-BFG-CFM 3 - Part of the 757DCDA Series Egress System For traps with repaceable seats

For traps with repaceable seats

as well as restricting unauthorized use

This valve automatically allows air to enter into the piping system to prevent vacuum conditions that could siphon water from the system and damage water equipment

Epoxy-coated cast iron body with anchor flange and dual weepholes for double drainage

The galvanized chicken wire ships from Northern CA

Watts 757NDCDA-BFG-CFM 3 - Part of the 757DCDA Series Egress System For traps with repaceable seatsThis 3 IN, N pattern, double check detector backflow preventer assembly prevents the backflow of pollutants that are objectionable but not toxic, from entering into the potable water supply. Its compact housing consists of two independently operating tri link check valves, two UL FM butterfly shutoff valves, and four test cocks. It has a cubic foot meter. It features a stainless steel housing and sleeve and is 70 percent lighter than traditional