Valve Positioners
Valve positioners are used to achieve precise control in industrial applications where the flow of liquids, gases, or steam needs to be accurately regulated. These devices adjust the valve actuator's position based on input signals, ensuring optimal performance and efficiency in process control systems.
Types of Valve Positioners
Centro offers a full range of valve positioners to meet various industry needs, including:
- Pneumatic valve positioners—These use air pressure to adjust valve positions, and they are ideal for applications requiring fast and reliable control.
- I/P valve positioners (current-to-pressure) – Convert electrical signals (4-20mA) into pneumatic pressure to precisely control valve actuation.
- Electro-pneumatic positioners – Combine electrical and pneumatic inputs for enhanced control in automated systems.
Choosing the Right Valve Positioner
Selecting the right valve positioner depends on factors such as:
- The type of actuator (linear or rotary)
- Control signal requirements (pneumatic, electric, or hybrid)
- Environmental conditions, such as temperature and pressure
- Desired precision and response time
Why Choose Centro for Valve Positioners?
- Extensive selection of valve positioners, including pneumatic and I/P models.
- High-quality products sourced from leading manufacturers.
- Competitive pricing to ensure cost-effective solutions.
Expert support to help you find the best positioner for your system.
Whether you need a simple on/off control or a complex proportional positioning system, Centro has the right valve positioner for your application. Browse our selection online or contact our team for expert assistance in choosing the best solution for your process control needs.
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FISHER DVC FIELDBUS;POSITIONER W MTG
$2,720.00$3,400.00
Low Stock (1)Ships within 1 business day
FISHER DVC FIELDVIEW;POSITIONER W MTG
$3,399.79
Low Stock (5)Ships within 1 business day
The Moniteur Devices IMAZ-D000-1 Indicator is a rugged visual valve position indicator designed to provide clear, reliable indication of valve status in automated process systems. Built for demanding industrial environments, this indicator mounts directly to valve actuators and provides operators with an immediate visual confirmation of valve position during operation.
$97.00
Low Stock (2)Ships within 1 business day
Stable and accurate positioning of rotary and linear valves The Type-2000 Pneumatic and Electro-Pneumatic Valve Positioners are designed to provide stable and accurate control of rotary and linear valves. These force balanced devices are operated with cam characterized air pressure control utilizing a low friction spool valve to accurately drive rotary and linear pneumatic actuators. The force balanced instruments are simple, reliable and user friendly for calibration, maintenance and field upgrades. The electro-pneumatic unit is available with worldwide safety approvals in an Intrinsically Safe and Explosion-proof version. The NEMA-4X (IP 66) housing provides rugged resistance to severe industrial environments. The modular design of the Type-2000 allows multiple feature ordering options or easy field conversions.
$580.57
Available for Purchase
Subject to factory lead times
Stable and accurate positioning of rotary and linear valves The Type-2000 Pneumatic and Electro-Pneumatic Valve Positioners are designed to provide stable and accurate control of rotary and linear valves. These force balanced devices are operated with cam characterized air pressure control utilizing a low friction spool valve to accurately drive rotary and linear pneumatic actuators. The force balanced instruments are simple, reliable and user friendly for calibration, maintenance and field upgrades. The electro-pneumatic unit is available with worldwide safety approvals in an Intrinsically Safe and Explosion-proof version. The NEMA-4X (IP 66) housing provides rugged resistance to severe industrial environments. The modular design of the Type-2000 allows multiple feature ordering options or easy field conversions.
$580.57
Available for Purchase
Subject to factory lead times
Stable and accurate positioning of rotary and linear valves The Type-2000 Pneumatic and Electro-Pneumatic Valve Positioners are designed to provide stable and accurate control of rotary and linear valves. These force balanced devices are operated with cam characterized air pressure control utilizing a low friction spool valve to accurately drive rotary and linear pneumatic actuators. The force balanced instruments are simple, reliable and user friendly for calibration, maintenance and field upgrades. The electro-pneumatic unit is available with worldwide safety approvals in an Intrinsically Safe and Explosion-proof version. The NEMA-4X (IP 66) housing provides rugged resistance to severe industrial environments. The modular design of the Type-2000 allows multiple feature ordering options or easy field conversions.
$580.57
Available for Purchase
Subject to factory lead times
Stable and accurate positioning of rotary and linear valves The Type-2000 Pneumatic and Electro-Pneumatic Valve Positioners are designed to provide stable and accurate control of rotary and linear valves. These force balanced devices are operated with cam characterized air pressure control utilizing a low friction spool valve to accurately drive rotary and linear pneumatic actuators. The force balanced instruments are simple, reliable and user friendly for calibration, maintenance and field upgrades. The electro-pneumatic unit is available with worldwide safety approvals in an Intrinsically Safe and Explosion-proof version. The NEMA-4X (IP 66) housing provides rugged resistance to severe industrial environments. The modular design of the Type-2000 allows multiple feature ordering options or easy field conversions.
$908.71
Available for Purchase
Subject to factory lead times
Stable and accurate positioning of rotary and linear valves The Type-2000 Pneumatic and Electro-Pneumatic Valve Positioners are designed to provide stable and accurate control of rotary and linear valves. These force balanced devices are operated with cam characterized air pressure control utilizing a low friction spool valve to accurately drive rotary and linear pneumatic actuators. The force balanced instruments are simple, reliable and user friendly for calibration, maintenance and field upgrades. The electro-pneumatic unit is available with worldwide safety approvals in an Intrinsically Safe and Explosion-proof version. The NEMA-4X (IP 66) housing provides rugged resistance to severe industrial environments. The modular design of the Type-2000 allows multiple feature ordering options or easy field conversions.
$908.71
Available for Purchase
Subject to factory lead times
Stable and accurate positioning of rotary and linear valves The Type-2000 Pneumatic and Electro-Pneumatic Valve Positioners are designed to provide stable and accurate control of rotary and linear valves. These force balanced devices are operated with cam characterized air pressure control utilizing a low friction spool valve to accurately drive rotary and linear pneumatic actuators. The force balanced instruments are simple, reliable and user friendly for calibration, maintenance and field upgrades. The electro-pneumatic unit is available with worldwide safety approvals in an Intrinsically Safe and Explosion-proof version. The NEMA-4X (IP 66) housing provides rugged resistance to severe industrial environments. The modular design of the Type-2000 allows multiple feature ordering options or easy field conversions.
$972.36
Available for Purchase
Subject to factory lead times
Stable and accurate positioning of rotary and linear valves The Type-2000 Pneumatic and Electro-Pneumatic Valve Positioners are designed to provide stable and accurate control of rotary and linear valves. These force balanced devices are operated with cam characterized air pressure control utilizing a low friction spool valve to accurately drive rotary and linear pneumatic actuators. The force balanced instruments are simple, reliable and user friendly for calibration, maintenance and field upgrades. The electro-pneumatic unit is available with worldwide safety approvals in an Intrinsically Safe and Explosion-proof version. The NEMA-4X (IP 66) housing provides rugged resistance to severe industrial environments. The modular design of the Type-2000 allows multiple feature ordering options or easy field conversions.
$908.71
Available for Purchase
Subject to factory lead times
Stable and accurate positioning of rotary and linear valves The Type-2000 Pneumatic and Electro-Pneumatic Valve Positioners are designed to provide stable and accurate control of rotary and linear valves. These force balanced devices are operated with cam characterized air pressure control utilizing a low friction spool valve to accurately drive rotary and linear pneumatic actuators. The force balanced instruments are simple, reliable and user friendly for calibration, maintenance and field upgrades. The electro-pneumatic unit is available with worldwide safety approvals in an Intrinsically Safe and Explosion-proof version. The NEMA-4X (IP 66) housing provides rugged resistance to severe industrial environments. The modular design of the Type-2000 allows multiple feature ordering options or easy field conversions.
$965.22
Available for Purchase
Subject to factory lead times
Stable and accurate positioning of rotary and linear valves The Type-2000 Pneumatic and Electro-Pneumatic Valve Positioners are designed to provide stable and accurate control of rotary and linear valves. These force balanced devices are operated with cam characterized air pressure control utilizing a low friction spool valve to accurately drive rotary and linear pneumatic actuators. The force balanced instruments are simple, reliable and user friendly for calibration, maintenance and field upgrades. The electro-pneumatic unit is available with worldwide safety approvals in an Intrinsically Safe and Explosion-proof version. The NEMA-4X (IP 66) housing provides rugged resistance to severe industrial environments. The modular design of the Type-2000 allows multiple feature ordering options or easy field conversions.
$965.22
Available for Purchase
Subject to factory lead times
FISHER DVC FIELDBUS;POSITIONER W MTG
$2,720.00$3,400.00
Low Stock (1)Ships within 1 business day
FISHER DVC FIELDVIEW;POSITIONER W MTG
$3,399.79
Low Stock (5)Ships within 1 business day
The Moniteur Devices IMAZ-D000-1 Indicator is a rugged visual valve position indicator designed to provide clear, reliable indication of valve status in automated process systems. Built for demanding industrial environments, this indicator mounts directly to valve actuators and provides operators with an immediate visual confirmation of valve position during operation.
$97.00
Low Stock (2)Ships within 1 business day
Stable and accurate positioning of rotary and linear valves The Type-2000 Pneumatic and Electro-Pneumatic Valve Positioners are designed to provide stable and accurate control of rotary and linear valves. These force balanced devices are operated with cam characterized air pressure control utilizing a low friction spool valve to accurately drive rotary and linear pneumatic actuators. The force balanced instruments are simple, reliable and user friendly for calibration, maintenance and field upgrades. The electro-pneumatic unit is available with worldwide safety approvals in an Intrinsically Safe and Explosion-proof version. The NEMA-4X (IP 66) housing provides rugged resistance to severe industrial environments. The modular design of the Type-2000 allows multiple feature ordering options or easy field conversions.
$580.57
Available for Purchase
Subject to factory lead times
Stable and accurate positioning of rotary and linear valves The Type-2000 Pneumatic and Electro-Pneumatic Valve Positioners are designed to provide stable and accurate control of rotary and linear valves. These force balanced devices are operated with cam characterized air pressure control utilizing a low friction spool valve to accurately drive rotary and linear pneumatic actuators. The force balanced instruments are simple, reliable and user friendly for calibration, maintenance and field upgrades. The electro-pneumatic unit is available with worldwide safety approvals in an Intrinsically Safe and Explosion-proof version. The NEMA-4X (IP 66) housing provides rugged resistance to severe industrial environments. The modular design of the Type-2000 allows multiple feature ordering options or easy field conversions.
$580.57
Available for Purchase
Subject to factory lead times
Stable and accurate positioning of rotary and linear valves The Type-2000 Pneumatic and Electro-Pneumatic Valve Positioners are designed to provide stable and accurate control of rotary and linear valves. These force balanced devices are operated with cam characterized air pressure control utilizing a low friction spool valve to accurately drive rotary and linear pneumatic actuators. The force balanced instruments are simple, reliable and user friendly for calibration, maintenance and field upgrades. The electro-pneumatic unit is available with worldwide safety approvals in an Intrinsically Safe and Explosion-proof version. The NEMA-4X (IP 66) housing provides rugged resistance to severe industrial environments. The modular design of the Type-2000 allows multiple feature ordering options or easy field conversions.
$580.57
Available for Purchase
Subject to factory lead times
Stable and accurate positioning of rotary and linear valves The Type-2000 Pneumatic and Electro-Pneumatic Valve Positioners are designed to provide stable and accurate control of rotary and linear valves. These force balanced devices are operated with cam characterized air pressure control utilizing a low friction spool valve to accurately drive rotary and linear pneumatic actuators. The force balanced instruments are simple, reliable and user friendly for calibration, maintenance and field upgrades. The electro-pneumatic unit is available with worldwide safety approvals in an Intrinsically Safe and Explosion-proof version. The NEMA-4X (IP 66) housing provides rugged resistance to severe industrial environments. The modular design of the Type-2000 allows multiple feature ordering options or easy field conversions.
$908.71
Available for Purchase
Subject to factory lead times
Stable and accurate positioning of rotary and linear valves The Type-2000 Pneumatic and Electro-Pneumatic Valve Positioners are designed to provide stable and accurate control of rotary and linear valves. These force balanced devices are operated with cam characterized air pressure control utilizing a low friction spool valve to accurately drive rotary and linear pneumatic actuators. The force balanced instruments are simple, reliable and user friendly for calibration, maintenance and field upgrades. The electro-pneumatic unit is available with worldwide safety approvals in an Intrinsically Safe and Explosion-proof version. The NEMA-4X (IP 66) housing provides rugged resistance to severe industrial environments. The modular design of the Type-2000 allows multiple feature ordering options or easy field conversions.
$908.71
Available for Purchase
Subject to factory lead times
Stable and accurate positioning of rotary and linear valves The Type-2000 Pneumatic and Electro-Pneumatic Valve Positioners are designed to provide stable and accurate control of rotary and linear valves. These force balanced devices are operated with cam characterized air pressure control utilizing a low friction spool valve to accurately drive rotary and linear pneumatic actuators. The force balanced instruments are simple, reliable and user friendly for calibration, maintenance and field upgrades. The electro-pneumatic unit is available with worldwide safety approvals in an Intrinsically Safe and Explosion-proof version. The NEMA-4X (IP 66) housing provides rugged resistance to severe industrial environments. The modular design of the Type-2000 allows multiple feature ordering options or easy field conversions.
$972.36
Available for Purchase
Subject to factory lead times
Stable and accurate positioning of rotary and linear valves The Type-2000 Pneumatic and Electro-Pneumatic Valve Positioners are designed to provide stable and accurate control of rotary and linear valves. These force balanced devices are operated with cam characterized air pressure control utilizing a low friction spool valve to accurately drive rotary and linear pneumatic actuators. The force balanced instruments are simple, reliable and user friendly for calibration, maintenance and field upgrades. The electro-pneumatic unit is available with worldwide safety approvals in an Intrinsically Safe and Explosion-proof version. The NEMA-4X (IP 66) housing provides rugged resistance to severe industrial environments. The modular design of the Type-2000 allows multiple feature ordering options or easy field conversions.
$908.71
Available for Purchase
Subject to factory lead times
Stable and accurate positioning of rotary and linear valves The Type-2000 Pneumatic and Electro-Pneumatic Valve Positioners are designed to provide stable and accurate control of rotary and linear valves. These force balanced devices are operated with cam characterized air pressure control utilizing a low friction spool valve to accurately drive rotary and linear pneumatic actuators. The force balanced instruments are simple, reliable and user friendly for calibration, maintenance and field upgrades. The electro-pneumatic unit is available with worldwide safety approvals in an Intrinsically Safe and Explosion-proof version. The NEMA-4X (IP 66) housing provides rugged resistance to severe industrial environments. The modular design of the Type-2000 allows multiple feature ordering options or easy field conversions.
$965.22
Available for Purchase
Subject to factory lead times
Stable and accurate positioning of rotary and linear valves The Type-2000 Pneumatic and Electro-Pneumatic Valve Positioners are designed to provide stable and accurate control of rotary and linear valves. These force balanced devices are operated with cam characterized air pressure control utilizing a low friction spool valve to accurately drive rotary and linear pneumatic actuators. The force balanced instruments are simple, reliable and user friendly for calibration, maintenance and field upgrades. The electro-pneumatic unit is available with worldwide safety approvals in an Intrinsically Safe and Explosion-proof version. The NEMA-4X (IP 66) housing provides rugged resistance to severe industrial environments. The modular design of the Type-2000 allows multiple feature ordering options or easy field conversions.
$965.22
Available for Purchase
Subject to factory lead times
FAQS
- A valve positioner is a precision instrument mounted directly on a control valve actuator that ensures the valve moves to and holds the exact position demanded by the control system signal. It acts as a high-gain, closed-loop controller for the valve itself — receiving the command signal (4-20 mA or 3-15 PSI), comparing it to the actual valve position via a mechanical or electronic feedback linkage, and adjusting the air supply to the actuator to close any gap between commanded and actual position. Without a positioner, control valve accuracy is compromised by friction in valve packing, process forces on the closure element, actuator hysteresis, and variations in air supply pressure. A positioner overcomes all of these by applying whatever air pressure is needed to force the actuator to the correct position. This improves the valve's response speed, positioning accuracy, repeatability, and overall control loop stability — resulting in tighter process control, less variability in the controlled variable (temperature, pressure, flow, level), and reduced energy and raw material waste.
- Yes, most modern valve positioners are designed to work with both rotary (quarter-turn) and linear (rising-stem) valve actuators. Rotary valves include ball valves, butterfly valves, and plug valves where the closure element rotates to control flow — the actuator produces a quarter-turn (90-degree) motion. Linear valves include globe valves and gate valves where the closure element moves up and down (rises) to control flow — the actuator produces a straight-line stroking motion. The positioner connects to the valve stem or actuator shaft through a feedback linkage that translates the valve's physical position into a signal the positioner can compare to the command signal. For rotary valves, this is typically a rotary feedback arm connected to the actuator shaft. For linear valves, it is a linear feedback linkage connected to the actuator stem. Many positioners, including the Type-2000 available through Centro, are designed with mounting brackets and feedback kits that accommodate both rotary and linear actuators, and they use cam-characterized air pressure control to provide stable, accurate positioning for either type.
- Valve positioners are often installed outdoors or in harsh industrial environments, so they are built with enclosures rated for the conditions. NEMA 4X (IP66) enclosures provide protection against water, dust, corrosion, and washdown — this is the standard industrial rating for most process plant installations. For installations in hazardous (classified) areas where flammable gases, vapors, or dust may be present, valve positioners are available with specific safety certifications. Intrinsically Safe (IS) certification means the electrical energy in the positioner's circuits is limited to a level below what could ignite the surrounding atmosphere — these positioners can be used in Zone 0/1 or Division 1 classified areas. Explosion-proof (XP) certification means the positioner's enclosure is designed to contain any internal explosion and prevent it from igniting the surrounding atmosphere. The electro-pneumatic Type-2000 positioner available through Centro is offered with worldwide safety approvals in both intrinsically safe and explosion-proof versions, making it suitable for installation in chemical plants, refineries, and other facilities with hazardous area classifications.
- Calibrating a valve positioner involves setting the zero (the actuator position when the input signal is at its minimum — typically 4 mA or 3 PSI) and the span (the actuator position when the input signal is at its maximum — typically 20 mA or 15 PSI) so that the full range of the input signal produces the full stroke of the valve. For pneumatic and basic electro-pneumatic positioners, this is done using zero and span adjustment screws on the positioner while applying known input signals and observing the valve position. Force-balanced positioners like the Type-2000 are designed to be simple and user-friendly for calibration with straightforward adjustment procedures. Digital smart positioners often have auto-calibration routines that automatically stroke the valve through its full range and set zero and span without manual adjustment. For maintenance, keep the positioner's air supply clean and dry (use instrument air quality — filtered, dried, and oil-free), inspect the feedback linkage for wear or looseness, check that the air supply pressure is within the positioner's specified range, and verify that tubing connections are tight and leak-free. Periodically verify calibration by applying known input signals and confirming the valve reaches the correct position.