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Protects compressor and pipelines from sudden pressure change. Directs gas from the compressor discharge to the compressor suction.



Related Terms

COMPRESSION RATIO

The ratio of the absolute pressure at the discharge from a compressor divided by the absolute pressure at the suction. For internal combustion engines compression ration is absolute pressure at the end of compression stroke divided by absolute pressure at beginning of this stroke

HIGH SIDE

The sections of a refrigeration system which operate at the high discharge pressure of a compressor or pump i.e. Condenser.

VACUUM PUM

Low-pressure air compressor that takes suction from a region below atmospheric pressure (turbine condenser) and discharge into the atmosphere.

BUBBLE TEST

Measurement of the largest opening in the mesh of a filter screen; determined by the pressure needed to force air or gas through the screen while it is submerged in a liquid.

MAXIMUM WORKING AREA

[INDENG] That portion of the working area that is readily accessible to the hands of a worker when in his normal states that the difference between the specific heat of a gas at constant pressure and its specific heat at constant volume is equal to the gas constant divided by the molecular weight of the gas.

COMPRESSOR VALVE

A valve in a compressor, usually automatic, which operates by pressure difference (less than 5 pounds per square inch or 35 kilopascals) on the two sides of a movable, single-loaded member and which has no mechanical linkage with the moving parts of the compressor mechanism.

GAS VOLUME FRACTION (GVF)

The gas volume flow rate, relative to the multiphase volume flow rate, at the pressure and temperature prevailing in that section. The GVF is normally expressed as a percentage.

COMPRESSOR STATION

A permanent facility which increases the pressure on gas to move it in transmission lines or into storage.

GAS-OIL-RATIO (GOR)

The gas volume flow rate, relative to the oil volume flow rate, both converted to volumes at standard pressure and temperature.

SUCTION PRESSURE REGULATOR

An automatic valve designed to limit the suction pressure to prevent compressor overload.

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