Control Valve Positioner is a device designed to actively compare valve stem position against the control signal, adjusting pressure to the actuator.

Positioners essentially act as control systems within themselves: the valve’s stem position is the process variable (PV), the command signal to the positioner is the setpoint (SP), and the positioner’s signal to the valve actuator is the manipulated variable (MV) or output.

Valve positioners are typically pneumatic or analog I/P and are used when a valve requires throttling action. They require position feedback from the valve stem or shaft and deliver pneumatic pressure to the actuator to open and close the valve

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. Below, we’ll talk about why you might want to use them, how the three main types of …

Jan 16, 2019 · Valve positioners are devices used to put a valve in correct position by sensing the valve’s location and communicating to the actuator to move it.

A valve positioner is a device used to increase or decrease the air load pressure driving the actuator of a control valve until the valve’s stem reaches a position balanced to the output signal from the process variable instrument controller.

What is a Positioner in the Control Valve? A valve positioner is an essential component used in control valves to adjust the position of the valve stem or actuator shaft, ensuring that it aligns accurately with the desired setpoint from the control system.

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Nov 24, 2020 · A Control Valve Positioner is a device used to increase or decrease the air load pressure driving the actuator until the valve’s stem reaches a “POSITION” balanced to the output SIGNAL from the process variable instrument controller.

The pneumatic valve positioner accepts an input pneumatic signal from a control device and sends an increased or decreased output signal to a control valve to ensure the control valve plug travels correctly and is positioned properly on the valve seat.