Temperature and Pressure Relief Valve, Inlet Type FNPT, Outlet Type FNPT, Inlet Size 1 1/2 in, Outlet Size 1 1/2 in, Thermostat Length 4 in, Body Height 11 9/16 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