As a common control valve accessory, the valve positioner delivers pressurized air to the valve actuator so that the position of the valve stem or shaft corresponds to the set point from the control system.

A positioner is a motion-control device designed to actively compare stem position against the control signal, adjusting pressure to the actuator diaphragm or piston until the correct stem position is reached:

As the interface between the control system and valves, positioners play an important role in ensuring reliability and optimal performance in your automated process plants.

Whether starting or stopping a process, or monitoring access points and machine positions, ABB offers a complete range of command and signaling devices, engineered to deliver dependable response …

There are four basic types of valve positioners: pneumatic, electronic, electro-pneumatic, and digital. Pneumatic devices send and receive pneumatic signals. They are intrinsically safe and can provide a …

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A positioner for a control valve is used to adjust a valve’s position based on a desired set point for a process variable, whether it be pressure, temperature, or flow.

Jun 29, 2019 · A common solution to this dilemma is to add a positioner to the control valve assembly. A positioner is a motion-control device designed to actively compare stem position against the control …

There are three main types of positioners: pneumatic, electro-pneumatic, and digital. Each one has its own strengths and ideal applications. Pneumatic positioners are the old-school classic of the …

A positioner overcomes these challenges by creating a closed-loop control system for the valve’s position. It continuously compares the control signal with the actual position of the valve stem and …