A pressure relief valve that is intended to release excess pressure or admit pressure to prevent a vacuum forming when filling or emptying a pipeline or tank.

A vertical vessel intended to enable chemical reactions or physical processes utilising differences in density of fluids and/or forced flow of fluid.

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

A positive displacement compressor in which forced reduction of gas volume takes place by the movement of a displacing element in a cylinder or enclosure.

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 self operating valve that is set to open at a certain pressure level to prevent the pressure in a container or system from reaching unsafe levels.

A rigid vertical or near vertical pipe for the flow of liquid or gas between the seabed and the surface.

A physical object that is a vertical or near vertical pipe for the upward flow of liquid or gas.

A conveyor comprising a series of closely spaced rollers set so that their crests can support articles to be conveyed. They may be power-driven, or freely revolving. Tapered rollers are used to form bends in the conveyor line.

A positive displacement compressor in which compression displacement is effected by the positive action of rotating elements.

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 tool that can be used to install or remove machines or equipment.

A physical object that is a pressure relieving device designed to burst at a calibrated pressure to prevent pressure in systems or vessels from reaching unsafe levels.

Is a conveyer intended to move dry, solid material from one location to another by means of a helix or screw rotating in a cylindrical conduit.

A distillation column intended to clean gas by washing the gas flow with water or with another liquid entering at the top of the vessel and sprayed in the gas. Typically to remove dust and small particles.

A valve that includes a means of operation (e.g. spring / gravity / fluid pressure / counter balance), and is not depending on an external source of energy.

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

A vibrating screen for sifting out rock cuttings from drilling mud.

A conveyor consisting of a series of slats generally made of metal or wood attached to an endless chain.

A slide valve that is equipped with an actuator that manipulates a stream of fluid in the response to a signal from an external sensing element and with input of energy from an external source.

A valve that opens and closes a passageway by sliding over a port.

A physical object that consists of wedge-shaped pieces of metal loosely joined together and fitted into a bushing to support a string of pipe. The slips have gripping elements to prevent the pipe from slipping down the drilling hole.

A valve that has linear action which is fitted with a solenoid for quick operation.

A column which transforms a material from an unstable state to a more stable state; for fluids typically by removing volatile components from a mixture.

A physical object that is intended to mix fluid by means of diverging the flow with static obstacles or by increasing locally the velocity.