With spring heat sink All-in-one safety valve with spring Features: A40Y-16C with spring full-relief valve spring temperature for operating temperature ≤ 420 ℃, A40Y-16I with a radiator Spring all-valve safety valve for operating temperature ≤ 450 ℃ of air, petroleum gas and other media equipment and piping, as overpressure protection device. When the equipment and piping pressure exceeds the allowable value, the radiator spring safety valve will open automatically, and then the full amount of emissions; when the pressure is reduced to the required value, the radiator spring all-safety valve will automatically shut down to protect the equipment safe operation.