A physical object for storing energy, and which after discharge may be recharged.

A gravity separator where two liquid substances separates and where the substance with the less gravity can be skimmed off.

A physical object intended to catch fluid droplets.

A tank or vessel in which a process stream is charged or pumped and where lighter products flash off or vaporize and are drawn off at the top. The remainder heavier fractions are drawn off at the bottom of the vessel.

A pressure vessel located in both pump- and compressor piping systems in order to reduce residual pulsation fluctuations, as a result of discontinue operation effects, within an allowable level specified.

A catcher intended to catch and separate liquid slugs from a fluid stream.