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.

At its core, a positioner is a device used to control the position of a valve or an actuator. It ensures that the valve or actuator reaches and maintains a specific position as commanded by a control system.

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 …

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 …

Apr 29, 2025 · Explore our comprehensive portfolio of industrial pumps, seals, valves, and actuators designed to overcome the toughest flow control challenges.

Jan 27, 2025 · What is the operation of a positioner? A process controller or controller system sends a control signal to a positioner, which is often a digital signal or 4–20 mA.

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 …

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.