Watts 740 035 FS 1 1 2 Part of the 740 Series Access Tile Specifications Air Precharge 60 PSI Specifications Air Precharge 60 PSI Air Valve No Body Material Copper Brand Watts Buy American Act Compliant NO Connection Size 1 IN Connection Size Metric 25 MM Connection Type Socket EAN 098268499421 Factory Set Pressure PSI 60 Lead Free YES Maximum Operating Temperature Celsius 82 2 Body Material Lead Free Copper Silicon Alloy Brand Watts Buy American Act Compliant YES Corrosion Resistant Coating No Disc Material EPDM EAN 098268330083 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 3 4 IN Inlet Connection Type Socket Inlet Thread Type Does Not Apply To Product Lead Free YES Maximum Operating Temperature Fahrenheit 180 Maximum Working Pressure BAR 20 The valve can be used for hot water space heating boiler applications to protect against excessive pressure Specification Sheet Relief Valve Flood Sensor Retrofit Connection Kit (Spanish)