Temperature and Pressure Relief Valve, Inlet Type NPT, Outlet Type NPT, Inlet Size 3/4 in, Outlet Size 3/4 in, Thermostat Length 8 in, Body Height 11 3/32 in, 105,000 (Temperature Steam Discharge Capacity), 200,000 (Pressure Steam Discharge Capacity) BtuH, Factory Set Pressure 150 psi, Max. Temp. 210 Degrees F, Shank Length 1-1/8 in, Auto Re-Seating Yes, Body Material Copper Silicon Alloy, Spring Material Stainless Steel, Body Width 1 5/32 in, Standards ASME, CSA