A control switch that is operated by a person.

A control switch that is operated by a person.

A switch which is operated by a person.

A mechanical controller that is intended to position a given item in accordance with a received input signal.

A mechanical controller that is intended to position a given item in accordance with a received input signal.

An 'equipment class' that is a class of devices engaged in meteorological observations.

An 'equipment class' that is a class of devices engaged in meteorological observations

A device that is capable of three-phase metering of liquid, oil and gas.

A gas flow damper that is able to stay in any position between fully open and fully closed.

A switchgear and controlgear that houses motor starters to control electric motors.

A switchgear and controlgear that houses motor starters to control electric motors.

An operated valve that is opened and closed with a motor.

An operated valve that is opened and closed with a motor.

An analyser giving as output a signal that represents more than one physical properties of the analysed substance.

An analyser giving as output a signal that represents more than one physical properties of the analysed substance.

A flow meter for the metering a mixture of two or more fluid phases.

A flow meter for the metering a mixture of two or more fluid phases.

A valve not designed to regulate flow (e.g. on/off). A valve with multiple orifices or flow-restriction device to control fluid flow. Includes an actuator that needs auxiliary power to operate.

A valve not designed to regulate flow (e.g. on/off). A valve with multiple orifices or flow-restriction device to control fluid flow. Includes an actuator that needs auxiliary power to operate.

Is an artefact intended for a number of input channels to share one output channel.

A valve not designed to regulate flow (e.g. on/off). A multi port valve which has the possibility of multiple distinct paths for flow through it. Includes an actuator that needs auxiliary power to operate.

A valve not designed to regulate flow (e.g. on/off). A multi port valve which has the possibility of multiple distinct paths for flow through it. Includes an actuator that needs auxiliary power to operate.

A needle 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 needle 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 gas flow damper that prevents back flow in a duct.