3" 757 Double Check Valve Assembly (OSY)

Series 757, 757N Double Check Valve Assemblies are used to prevent backflow of non-health hazard pollutants that are objectionable but not toxic, from entering the potable water supply system. Series 757, 757N may be installed under continuous pressure service and may be subjected to backpressure and backsiphonage. Series 757, 757N consists of two independently operating check valves, two shutoff valves, and four test cocks.

Features

Extremely compact design

70% Lighter than traditional designs

304 (Schedule 40) Stainless steel housing & sleeve

Groove fittings allow integral pipeline adjustment

Patented tri-link check provides lowest pressure loss

Unmatched ease of serviceability

Replaceable check disc rubber