Safety Relief Valve Manufacturers usually state their recommended testing procedure and testing intervals in their Installation, Operating and Maintenance Instructions (IOM). Typically, they recommend a manual test every 3 or 6 months (assuming it has a lifting lever) and a set pressure test every 12 months.
Safety relief valves are in the pipe system for the protection of life. It is used to control or limit pressure in a system. It is designed to open and release excess pressure from vessels.
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