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