Watts 40XL 4 150 210 FS 1 Part of the 40L Series Window Well Extension Remove surface water from hardscapes Remove surface water from hardscapes with the Dura Slope® Channel Drain 2 Body Material Lead Free Cast Copper Silicon Alloy Brand Watts Buy American Act Compliant YES Corrosion Resistant Coating No Disc Material Elastomer EAN 098268332414 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 Union Female Threaded Inlet Thread Type NPT Lead Free YES Maximum Operating Temperature Fahrenheit 180 Maximum Working Pressure BAR 27 Specification Sheet 40 The valve can be installed in hot water outlet within the allowable distance from the top of the tank for commercial applications to provide protection for hot water supply tanks and hot water heaters