relief valve(redirected from Pressure Operated Relief Valve)
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Related to Pressure Operated Relief Valve: Safety Relief Valve
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|Noun||1.||relief valve - a valve in a container in which pressure can build up (as a steam boiler); it opens automatically when the pressure reaches a dangerous level|
regulator - any of various controls or devices for regulating or controlling fluid flow, pressure, temperature, etc.
valve - control consisting of a mechanical device for controlling the flow of a fluid