Pressure relief valve means any valve designed to open when the process pressure exceeds a set pressure, allowing the release of vapors or liquids until the process pressure is reduced to its normal operating level.
Pressure relief valve. (discharge valve)" means a device which prevents a pre- determined upstream pressure being exceeded.
Pressure relief valve means a pressure relief device that is designed to reclose and prevent the further flow of fluid after normal conditions have been restored. These devices include:
Examples of Pressure relief valve in a sentence
Extension No. Indication mark(s)1 a 80 per cent stop valve b Level indicator c Pressure relief valve d Remotely controlled service valve with excess valve e Fuel pump f Multi-valve g Gas-tight housing h Power supply bushing 1 The indication marks of technical modification apply only to Multivalve, or, when approved separately, to Pressure relief valve (discharge valve) and Pressure relief device.
More Definitions of Pressure relief valve
Pressure relief valve means a valve used only to release an unplanned, nonroutine discharge. A relief valve discharge can result from:
Pressure relief valve means a pressure actuated valve held closed by a spring or other means and designed to automati- cally relieve pressure at a designated pressure.
Pressure relief valve means a pressure-activated valve which opens automatically at a specified pressure to discharge fluid;
Pressure relief valve means a valve used only to release an unplanned, non-routine discharge. A relief valve discharge can result from an operator error, a malfunction such as a power failure or equipment failure, or other
Pressure relief valve means a type of pressure relief device which consists of a valve that automatically opens when the pressure within the system exceeds a set level and closes when the pressure drops below that level.
Pressure relief valve means a valve used only to release an unplanned, non- routine discharge. A relief valve discharge can result from an operator error, a malfunction such as a power failure or equipment failure, or other unexpected cause that requires immediate venting of gas from process equipment in order to avoid safety hazards or equipment damage.
Pressure relief valve means a safety valve which opens to vent pressure when the pressue [sic.] in the water tank exceeds a pre-set level due to excessive water temperature.