Relief Valves

This is a safety device which quickly intercepts gas flow when the pressure it is monitoring reaches a pre-set limit due to any anomaly in the system. relief valve or pressure relief valve (PRV) is a type of safety valve used to control or limit the pressure in a system; pressure might otherwise build up and create a process upset, instrument or equipment failure, or fire. The pressure is relieved by allowing the pressurized fluid to flow from an auxiliary passage out of the system.