Temperature and Pressure Relief Valve Inlet Type MNPT Outlet Type FNPT Inlet Size 3/4 in Outlet Size 3/4 in Thermostat Length 2 1/8 in Body Height 5 1/4 in 105 000 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 3/4 in Standards ANSI Z21.22 and ASME Section CSA Listed IV Rated