A detecting element that is a piece of suitable metal meant to corrode and give an indication of the corrosion rate.

A device that removes air or gases (methane, H2S, CO2 and others) from drilling liquids.

A physical object intended to catch fluid droplets.

A diaphragm 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 membrane valve that is a membrane valve where the closure member is a resilient diaphragm being forced against a port.

A process column intended to enable a distillation process.

A block and bleed valve that is incorporating two seats, each of which provides a seal, and a means of venting the space between the seats. The seats may isolate with the pressure differential acting in the same or in opposite directions depending on the design.

A valve that is intended for subsurface control/check operation.

A drier is a physical object that is intended to remove absorbed or adsorbed liquid or water vapour below saturation state.

A control valve that uses a rotating disc as closing element, and with a design that causes the disc to take a slightly eccentric path during actuation.

A valve that has a closing member which is an eccentric rotating disc.

An element located in a flowstream measuring the flow using electro-magnetic forces.

A valve that is assigned to act in case of emergency.

A physical object that is intended to deliver or exhaust volumes of vapour or gas at low differential pressure.

Is a fired heat transfer equipment intended to burn fuel and to transfer the heat of combustion to a liquid without vaporising the liquid.

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

A detecting element that is producing a signal that is proportional to a flow rate.

A regulator that normally use the differential pressure principle across an orifice to control the valve trim and regulate flow.

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

A control valve that is a gate valve and an actuated valve.

A valve that is a valve where the closure member is a gate or disc with a linear motion parallel, or nearly parallel, to the plane of flat seats, which are transverse to the direction of flow.

A control valve that is a globe valve and an actuated valve.

A valve that is a valve where the closure member is a disc or piston operating with linear motion normal to the flat or shaped seat.

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