Watts 957NRPDA-OSY-GPM 3 - Part of the 957RPDA Series Window Well Cover This pressure relief valve has

This pressure relief valve has a 3/4 inch NPTF female inlet and outlet and a 135 psi pressure relief setpoint

Flashing clamp with integral gravel stop for watertight membrane attachment

silicone seat discs

The drain cover has an open surface area of 73

Specifications ArmorTek Technology No Backflow Preventer Type Double Check Valve Assembly Body Finish Stainless Steel Body Material Stainless Steel Body Pattern Does Not Apply To Product Brand Watts Buy American Act Compliant NO Bypass No Bypass Size Does Not Apply To Product Cap And Tether No Disc Material Does Not Apply To Product EAN 098268878011 Elbow Fitting No Hazard Protection Level Non Health Hazard Hot And Harsh Water No Hydrant Connection No Inlet Connection Size 2 1/2 IN Inlet Connection Type Swivel Joint Inlet Shutoff Valve Type No Shutoff Valve Inlet Thread Type Does Not Apply To Product Lead Free Yes Maximum Temperature-Fahrenheit 110 Maximum Working Pressure-BAR 12

Watts 957NRPDA-OSY-GPM 3 - Part of the 957RPDA Series Window Well Cover This pressure relief valve hasThis 3 inch reduced pressure detector backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and water of non potable quality from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. Extremely compact and lighter than traditional designs it is approved for horizontal N pattern installation.