WATTS® Lead Free Double Check Valve Assembly, Series: SilverEagle® 757, 4 in Nominal, 175 psi Working, 33 to 140 deg F, Resilient Seated Gate Valve Ball Valve/Gate Valve type, 304 Stainless Steel Body, 33-3/4 in L x 11-3/16 in W
Series 757 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 may be installed under continuous pressure service and may be subjected to backpressure and backsiphonage. Series 757 consists of two independently operating check valves, two shutoff valves and four test cocks.