Temperature and Pressure Relief Valve, Inlet Type FNPT, Outlet Type FNPT, Inlet Size 1 in, Outlet Size 1 in, Thermostat Length 6 in, Body Height 6 5/8 in, 730,000 BtuH, Factory Set Pressure 125 psi, Max. Temp. 210 Degrees F, Shank Length Extended, Auto Re-Seating Yes, Body Material Bronze, Spring Material Steel, Body Width 3 3/8 in