This temperature and pressure relief valve has a maximum temperature of 210 Degrees F, 105,000 BtuH, and a factory-set pressure of 150 psi. Its MNPT inlet and FNPT outlet each measure 3/4 inches and it has a 1 7/8-inch long thermostat and 2 5/16-inch long shank. The body is bronze and measures 1 15/32 x 4 5/16 inches, and the valve is auto re-seating with a stainless steel spring. It meets CSA 4.4 standards.