Temperature and Pressure Relief Valve Inlet Type MNPT Outlet Type FNPT Inlet Size 3/4 in Outlet Size 3/4 in Thermostat Length 4 in Body Height 4 1/4 in 100 000 BtuH Factory Set Pressure 150 psi Max Temp 210 Degrees F Shank Length Extended Auto Re-Seating No Body Material Bronze Spring Material Stainless Steel Body Width 1 7/8 in