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

A dynamic pump that contains impellers provided with vanes to generate centrifugal force to achieve the required pressure head.

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

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 static device generating centrifugal force from an incoming flow which separates solid or liquids from a gas of a different density.

A physical object that is a casing with an arrangement of two or more gear-wheels transmitting rotating motion from the input shaft to the output shaft.

A separator that is based on the difference in specific gravity for the substances to be separated.

A cylinder where the piston is actuated by pressurized hydraulic fluid.

A cyclone separator intended to separate a fluid by hydraulic forces.

A drum intended to separate relatively small quantities of liquid from a vapour stream.

A physical object that adds or removes mechanical energy to a fluid, either constantly or periodically.

A positive displacement pump which contains a displacing element intended to be moved in a reciprocating movement to exert pressure on a fluid, typically moving within a cylindrical space.

A positive displacement pump that consists of a chamber containing gears, cams, screws, vanes, plungers or similar elements actuated by relative rotation of the drive shaft or casing and which has no separate inlet and outlet valves.

A 'device' intended to separate different types of substances.