Temperature and Pressure Relief Valve, Inlet Type MNPT, Outlet Type FNPT, Inlet Size 3/4 in, Outlet Size 3/4 in, Thermostat Length 2 1/8 in, Body Height 4 5/16 in, 105,000 BtuH, Factory Set Pressure 150 psi, Max. Temp. 210 Degrees F, Auto Re-Seating Yes, Body Material Bronze, Spring Material Stainless Steel, Body Width 1 15/32 in, Standards AGA/ASME, Compliance AGA/ASME