Watts 757NDCDA-OSY-LM 3 - Part of the 757DCDA Series ZA100F-4NH It consists of a lead

It consists of a lead fee cast copper silicon alloy body

This 1 IN lead free reduced pressure zone backflow preventer assembly is designed to prevent the flow of polluted water from entering into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements

ZN1400-3NL

Lightweight design (weighing under 15 lbs per linear foot) reduces labor and handling effort

Watts 757NDCDA-OSY-LM 3 - Part of the 757DCDA Series ZA100F-4NH It consists of a leadThis 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 shutoff valves, and four test cocks. It features a stainless steel housing and sleeve and is 70 percent lighter than traditional designs. It is designed for non health hazard