Watts 909RPDA OSY GPM 2 1 2 Part of the 909RPDA Series ZA100F 8NH 2 Body Material Lead Free 2 Body Material Lead Free Copper Silicon Alloy Brand Watts Corrosion Resistant Coating No Disc Material EPDM EAN 098268329421 Gauge Option No Gauge High Pressure Reduced Pressure Range Does Not Apply To Product High Pressure Reduced Pressure Setting Does Not Apply To Product Inlet Connection Size 1 2 IN Inlet Connection Type Union Solder Inlet Thread Type Does Not Apply To Product Lead Free YES Maximum Operating Temperature Fahrenheit 180 Maximum Working Pressure BAR 20 This 1 2 inch lead free anti siphon pressure vacuum breaker backflow preventer prevents the reverse flow of polluted water from entering into the potable water supply due to backsiphonage This assembly consists of an epoxy coated cast iron body OSY resilient seated gate valves