Temperature and Pressure Relief Valve Inlet Type FNPT Outlet Type FNPT Inlet Size 3/4 in Outlet Size 3/4 in Thermostat Length 5 in Body Height 10 7/8 in 1 619 000 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 1/2 in Standards Certified ANSI Z21.22 And CSA 4.4 Listed By ASME Section IV And CSA