SUPER 1968 safety relief valves are made for industrial and large commercial refrigeration systems. These valves are designed to provide relief from excessive pressure in refrigerant containing vessels. All refrigerant systems’ pressure vessels require pressure relief devices to safely release pressure in case of fire or other abnormal conditions. Once installed, our safety relief valve is ready to vent to atmosphere, any temporary excessive pressure inside the vessel. After discharge, these valves will attempt to reseat, minimizing loss of refrigerant. However, once any relief valve has discharged, it is recommended to get the valve cleaned and pressure reset, as once discharged debris may have settled on the seat.