This temperature and pressure relief valve has a factory-set pressure of 150 psi and a maximum temperature of 210 Degrees F with a 750,000 BtuH. It has a bronze, 1 3/4 x 5 7/8-inch body, a 4 3/4-inch long thermostat, and a shank length of 5 7/8 inches. The inlet and outlet are FNPT, with a one-inch inlet and 3/4-inch outlet. The valve is auto re-seating and has a stainless steel spring. It meets CSA 4.4 standards.