A control valve that is also a plug valve and an actuated valve.

A mechanical controller that is using pneumatic components to execute its function.

A pilot switch the actuating system of which is operated by a moving part of a machine, when this part reaches a predetermined position.

A transmitter that is producing a standardized output signal dependent of a received input signal from a position detector.

A flow transmitter specially designed to convert the signal from a positive displacement flow meter into a standardized electrical output signal.

A regulator that is controlling/regulating the pressure in a system.

A functional switch that (usually) turns an electrical circuit on or off when the pressure level reaches a pre-set value.

A transmitter that is producing a standardized output signal dependent of a received input signal from a pressure element.

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 level transmitter that is producing a standardized electrical output signal based on the input signal from a radar type level sensor.

A level transmitter that is producing a standardized electrical output signal based on the input signal from radioactive level measurements.

A pressure transmitter where pressure is applied to one side of the sensor while the other side is open to atmosphere. The transmitter generate standardized output signal representing the measured value.

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 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.

A detector intended to detect sand in a fluid.

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

A switch intended to give a on/off signal when the speed have reached a pre-set value.

A transmitter that is producing a standardized output signal dependent of a received input signal from a rotational speed sensor.

A detector intended to detect temperature.

A regulator that is intended to keep a temperature within certain boundaries.

A functional switch that is intended to give an on or off signal when the temperature have reached a pre-set value.

A transmitter that is producing a standardized output signal dependent of a received input signal from a temperature element.

A velocity flow meter which uses the principle of thermal conductivity to measure volume flow rate.