Temperature and Pressure Relief Valve Inlet Type MNPT Outlet Type FNPT Inlet Size 1 in Outlet Size 1 in Thermostat Length 3 in Body Height 8 5/8 in 1 825 000 BtuH Factory Set Pressure 125 psi Max Temp 210 Degrees F Shank Length Standard Auto Re-Seating Yes Body Material Bronze Spring Material Stainless Steel Body Width 1 9/16 in Standards Certified ANSI Z21.22 And CSA 4.4 Listed By ASME And CSA