Pressure relief valve definition

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.
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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.
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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:
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Examples of Pressure relief valve in a sentence

  • LPG retrofit equipment considered: Container Accessories fitted to the container 2/ 80 per cent stop valve Level indicator Pressure relief valve (discharge valve) Pressure relief device (fuse) Remote controlled service valve with excess flow valve With/without LPG fuel pump 2/ Multivalve, including the following accessories: ..................................................

  • 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.

  • Pressure relief valve on gas return from suction drum to safety header: 1 pce safety valve, 4 pcs block valves and 2 pcs bleed valves.

  • EXECUTION VERSION 42 Pressure relief valve from suction drum drain line to safety header: 2 pcs block valves and 1 pc bleed valve.

  • Container Accessories fitted to the container2 Level or pressure indicator Pressure relief valve (discharge valve) Remote-controlled automatic valve with excess flow valve Pressure relief device Gas-tight housing Pressure regulator2 Automatic valve2 Check valve2 Flexible fuel line or hose2 Filling unit2 Gas/air mixer (injector) 1 Distinguishing number of the country which has granted/extended/refused/withdrawn approval (see approval provisions in the Regulation).


More Definitions of Pressure relief valve

Pressure relief valve. (discharge valve)" means a device which prevents a pre- determined upstream pressure being exceeded.
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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.
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Pressure relief valve means a pressure-activated valve which opens automatically at a specified pressure to discharge fluid;
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Pressure relief valve means a device which opens automatically when the pressure in the part of the gas system to which it is fitted exceeds a set value, reaches its maximum flow capacity when the set value is exceeded by 10%, and closes automatically when the pressure falls below a set value; and
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Pressure relief valve means a valve used only to release an unplanned, nonroutine discharge. A relief valve discharge can result from:
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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.
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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
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