Temperature and Pressure Relief Valve Inlet Type MNPT Outlet Type FNPT Inlet Size 3/4 in Outlet Size 3/4 in Thermostat Length 3 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 Yes Body Material Bronze Spring Material Steel Body Width 1 7/8 in Standards Listed by CSA to the Requirements of ANSI Z21.22 and by the National Board to the Requirements of ASME Section IV