This temperature and pressure relief valve has a factory-set pressure at 150 psi with a maximum temperature of 210 Degrees F and 185,000 BtuH. Its thermostat length is 1 5/32 inches, shank length is 5 7/32 inches, and bronze body measures 1 17/32 x 5 7/32 inches. Its MNPT inlet and FNPT outlet each measure 3/4 inches. The valve has a stainless steel spring, is auto-re-seating, and meets CSA 4.4 standards.