What is the difference between a relief valve and a safety valve? ｜Aquasky
Both safety valves and relief valves are used to release pressure from a pressurized system. Both are pressure relief valves, and they are designed to let off pressure in any situation where a system becomes overpressurized. But relief valves and safety valves do function slightly differently:
Pressure relief valves protect pressure tanks and other equipment from catastrophic failure if the pressure in the system exceeds safe limits. Pressure relief valves relieve pressure by opening at a set pressure to exhaust air or water when normal operating controls fail or during abnormal system conditions. It is also a safety device that comes into use for maintaining the pressure of a system at a specific level so that overpressure conditions do not occur. The device does not allow the pressure to rise above the setpoint.
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