Temperature and Pressure Relief Valve Inlet Type MNPT Outlet Type FNPT Inlet Size 2 in Outlet Size 1 1/2 in Thermostat Length 3 in Body Height 11 7/16 in 5 125 000 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 2 1/2 in Standards Certified ANSI Z21.22 And CSA 4.4 Listed By ASME And CSA