Rotary actuators are essential components in a wide range of industrial and automation applications, providing controlled rotary motion to operate valves, dampers, and other mechanical systems. Unlike linear actuators that move in a straight line, rotary actuators produce angular displacement, making them ideal for tasks that require turning or rotating motion. These actuators are commonly used to automate quarter-turn valves such as ball valves and butterfly valves, ensuring accurate, repeatable, and efficient operation across various industries.

Key features and benefits of Rotary Actuators.

Key Features

Rotary actuators offer accurate control over angular motion, ensuring smooth and consistent rotation. This is crucial for applications that demand repeatable and reliable valve positioning.

Key Features

These actuators provide substantial torque, capable of handling heavy-duty valve operations. This makes them ideal for demanding industrial environments where power and reliability are essential.

Key Features

Rotary actuators are engineered to deliver powerful performance within a compact footprint. Their low-profile build allows for easy installation in tight or restricted spaces.

Key Features

Available in pneumatic, electric, and hydraulic models, rotary actuators suit a wide variety of system requirements. This flexibility enables seamless integration into existing infrastructure.

Key Features

Many rotary actuators feature durable materials and protective coatings that resist harsh chemicals and environments. This ensures longevity and reduced maintenance in corrosive or hazardous areas.

Key Features

Pneumatic rotary actuators deliver quick response times, while electric models offer controlled modulation. Both types contribute to increased productivity and process efficiency.

The Actreg Rotary Actuator is a high-performance rack and pinion actuator engineered for precise rotary motion in valve automation systems. Designed for 90° quarter-turn applications, it delivers reliable torque and smooth operation in both on/off and modulating control setups. With a compact footprint and robust construction, the Actreg actuator ensures dependable rotation for ball valves, butterfly valves, and dampers in even the most demanding environments.

Function:	Spring Return, Double Acting
Body Material:	Anodized Aluminium, Epoxy Coating C3 / C4 / C5
Rotation:	90°
Torque Levels:	5-6,500 NM
Operating Media:	Dry/Lubricated Air, Inert/Non-Corrosive Gases
Pressure Rating:	2.5 Bar (36 PSI) Minimum – 8 Bar (116 PSI) Maximum
Certifications:	SIL3, ATEX 94/9/EC, GOST

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Air Torque Rotary Actuators are engineered for precise and reliable rotary motion control using a robust rack and pinion mechanism. These actuators convert linear piston motion into consistent 90° or 180° rotation, making them ideal for automating quarter-turn valves such as ball, butterfly, and plug valves. Known for their compact design, repeatability, and torque consistency, Air Torque actuators are a trusted choice for critical valve control across industrial and process automation sectors.

Function:	Spring Return, Double Acting
Body Material:	Anodized Aluminium, PTFE Coating, Epoxy Coating, Stainless Steel
Rotation:	90°, 120°, 135°, 180°
Torque Levels:	8-10,000 NM
Operating Media:	Dry/Lubricated Air, Inert/Non-Corrosive Gases
Pressure Rating:	2.5 Bar (36 PSI) Minimum – 8 Bar (116 PSI) Maximum
Certifications:	SIL3 IEC 61508, ATEX 94/9/EC, GOST, GOST-R, EN 60529 IEC 529

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The AV ARES™ Compact Electric Rotary Actuator is a high-performance solution designed for the precise control of quarter-turn valves such as ball, butterfly, and plug valves. Built to deliver consistent, reliable rotation through 90° (or adjustable ranges), this actuator is ideal for systems requiring dependable electric actuation in compact spaces.

Function:	On/Off
Body Material:	Aluminium Alloy, Polyethylene Coating
Rotation:	90°
Torque Levels:	40NM
Temperature Rating:	-20 to +60ºC Maximum
Voltages:	110VAC, 230VAC, 12VDC, 24VDC, 24VAC
Standard Options:	Manual Override, Visual Position Indication, Feedback Switches

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The AV LITE® Economy Electric Rotary Actuator is a compact, cost-effective solution for reliable quarter-turn valve automation. Designed to provide consistent rotary motion, this actuator is ideal for ball valves, butterfly valves, and dampers requiring 90° operation. Its electrically powered rotary drive offers smooth and precise control for both on/off and modulating applications in low to medium-duty environments.

Function:	On/Off
Body Material:	Nylon
Rotation:	90°
Torque Levels:	40NM Maximum
Temperature Rating:	55ºC Maximum (150ºF)
Voltages:	110VAC, 230VAC, 24VDC
Standard Options:	Manual Override, Visual Position Indication, Feedback Switches

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Belimo Electric Rotary Actuators are engineered to provide precise, efficient control of air dampers in HVAC and ventilation systems. As rotary actuators, they deliver controlled angular motion, typically in 90° or 180° rotations, allowing dampers to open, close, or modulate with accuracy. These actuators play a key role in regulating airflow, pressure, and energy efficiency across commercial, industrial, and institutional buildings.

Ranges Available:	Non Fail-Safe Actuators & Fail-Safe Actuators
Actuator Types:	Rotary & Linear
Nominal Torque Ranges:	2 to 40 Nm
Degree of Protections:	IP54/20, & IP54/66

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The Bettis Pneumatic Rotary Rack & Pinion Actuator is a robust and compact solution for precise 90° quarter-turn valve automation. Designed to deliver consistent rotary motion, this actuator uses compressed air to drive a dual rack and pinion system, converting linear piston movement into smooth, balanced torque. Its design ensures fast operation, repeatable control, and minimal backlash — making it ideal for ball, butterfly, and plug valves.

Function:	Spring Return, Double Acting
Torque Levels:	Upto (135,000 Nm)
Operating Media:	Compressed Air
Maximum Working Pressure:	8 Bar
Certifications:	ATEX

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V-Tork Electric Rotary Actuators are designed for precise, reliable automation of quarter-turn valves such as ball valves, butterfly valves, and plug valves. Engineered for smooth and controlled rotary motion, these actuators deliver consistent torque output and responsive operation across a wide range of industrial applications. With a compact footprint and high-efficiency motor, they are an ideal solution for remote valve control in water treatment, process control, and general industrial flow systems.

Body Materials:	Aluminium alloy, Anodised and Coated with Polyester Powder, Nylon, Spring Steel, & More
Certifications:	ISO 9001:2015, SGC MD 2006/42/EC, & DNV
Communication Protocols:	Modbus, Profibus, HART Communication Protocol, DeviceNet, & Fieldbus Foundation

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The Elomatic Rotary Pneumatic Rack & Pinion Actuator is a high-performance solution engineered for precise 90° or 180° rotary motion in valve automation systems. Designed to convert compressed air into controlled, reliable rotational torque, this actuator is ideal for automating ball valves, butterfly valves, and other quarter-turn devices in demanding process environments.

Function:	Spring Return, Double Acting
Body Material:	Powder Coated Cast Aluminium
Rotation:	90°
Torque Levels:	12-4100NM, (106 to 36474 lbf.in)
Operating Media:	Dry/Lubricated Air, Inert/Non-Corrosive Gases
Pressure Rating:	Max 8.3 Bar-Pneumatic/120 PSI
Certifications:	ATEX, PED, Machine Directive, TR010, SIL3

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Hytork Rotary Actuators are engineered for smooth and reliable rotary motion, using a robust rack and pinion mechanism to deliver precise 90° or 180° valve rotation. Designed for pneumatic operation, these actuators convert air pressure into consistent torque output, making them ideal for quarter-turn valve automation across a range of industrial applications.

Function:	Spring Return, Double Acting
Body Material:	Powder Coated LM25 Aluminium Casting
Rotation:	90°
Torque Levels:	19-3232NM, (167 to 28500 lbf.in)
Operating Media:	Dry/Lubricated Air, Inert/Non-Corrosive Gases
Pressure Rating:	Max 8.3 Bar-Pneumatic/120 PSI
Certifications:	ATEX, PED, Machine Directive, TR010, SIL

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The J&J Multi-Voltage Battery Backup Rotary Actuator is a compact and intelligent electric actuator designed for reliable rotary motion control, even during power loss. Featuring an integrated battery backup system, this actuator automatically returns the valve to a pre-set safe position when external power fails—providing peace of mind in critical flow control applications.

Function:	On/Off, Modulating, Battery Backup
Body Material:	Aluminium Alloy, Polyethylene Coating
Rotation:	45°, 90°, 180°
Torque Levels:	20-300NM
Temperature Rating:	-20 to +70ºC Maximum
Voltages:	110VAC, 230VAC, 12VDC, 12VAC, 24VDC, 24VAC
Standard Options:	Manual Override, Visual Position Indication, Feedback Switches, LED Indicator

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The Koei UNIC Electric Rotary Actuator is a high-performance solution designed for quarter-turn valve automation, providing smooth and precise rotation for ball, butterfly, and plug valves. Built in Japan to exceptional standards, this actuator delivers reliable torque and consistent control in demanding industrial environments. Its rotary motion is engineered for applications requiring 90° actuation, with accurate start and end positions for full open and close cycles.

Function:	On/Off, Fail Safe, Battery Backup, Modulating (Nucom)
Body Material:	Die-Cast Aluminium Stove Enamel Finish
Rotation:	90°
Torque Levels:	20NM-1500NM
Temperature Rating:	Min-25°C Max 55°C
Voltages:	110VAC/50-60Hz, 230VAC/50-60Hz, 24VAC/50-60Hz, 24VDC
Standard Options:	Manual Override, Visual Position Indication, Feedback Switches

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Valpes Electric Rotary Actuators are engineered to deliver reliable, precise 90° (quarter-turn) motion for the automation of ball valves, butterfly valves, and other rotary-style valve types. Designed for industrial, commercial, and water treatment applications, these actuators offer simple on-off or modulating control with durable, compact housings and user-friendly features.

Function:	On/Off, Fail Safe, Battery Backup, Modulating
Rotation:	Quarter Turn, Multiturn
Torque Levels:	10 to 2400 Nm
Temperature Rating:	-20°C to +70°C
Voltages:	12, 24, 110, 230 AC/DC
Standard Options:	Manual Override, Visual Position Indication, Feedback Switches, LED Indicator

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V-Tork Rotary Pneumatic Actuators are engineered for precise and reliable quarter-turn motion, making them the ideal solution for the automation of ball, butterfly, and plug valves. Built on a rack and pinion mechanism, these actuators deliver consistent torque throughout the stroke, ensuring smooth, repeatable rotation even in demanding conditions.

Function:	Spring Return, Double Acting
Diameter Range (mm):	32 to 400
Weight Range (kg):	0.47 to 283.5
Body Materials:	Aluminium Alloy, 45# Steel, Advanced Polymer, Stainless Steel, NBR, & Spring Steel
Certifications:	ISO 9001:2015, SGC MD 2006/42/EC, ATEX TUV NORD, & Bureau Veritas SIL 3

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Rotary actuators are frequently used in valve automation, particularly with ball valves, butterfly valves, and plug valves that require quarter-turn or modulating control. They are essential in process industries like oil & gas, chemical, power generation, and water treatment, where accurate and dependable valve control is critical for flow regulation and system safety.

In factory automation and robotics, rotary actuators provide controlled angular movement for equipment positioning, indexing tables, and assembly line functions. They’re also used in HVAC systems for damper control and in marine and offshore environments where corrosion-resistant actuators are required for harsh operating conditions. Their ability to automate manual operations helps improve safety, efficiency, and precision across virtually any application involving rotational motion.

Rotary actuators are important because they play a critical role in automating and controlling rotary motion, which is essential for countless industrial processes. Without them, many systems would rely on manual intervention or imprecise mechanisms, leading to inefficiencies, safety risks, and inconsistent results.

They ensure precision, repeatability, and speed in operations such as valve actuation, machinery rotation, and equipment positioning. This reduces downtime, lowers labour costs, and enhances system reliability. In industries where timing and accuracy are vital—such as chemical dosing, flow regulation, or robotic movement—rotary actuators help maintain optimal performance and operational safety. Their ability to integrate with control systems also supports digital transformation and remote monitoring efforts in modern industrial environments.

Industries

A valve actuator is a mechanical device used to control the opening and closing of valves, allowing for remote or automated operation.

Actuators can be used with various types of valves, including ball valves, butterfly valves, gate valves, globe valves, and plug valves, among others.

The main types of valve actuators include pneumatic actuators, electric actuators, hydraulic actuators, and manual actuators.

A pneumatic actuator uses compressed air to generate mechanical motion, which is then used to operate the valve, either by opening or closing it.

Electric actuators offer precise control, easier integration with control systems, and do not require a constant supply of compressed air like pneumatic actuators.

Factors to consider include the type and size of the valve, operating environment (temperature, pressure, hazardous conditions), control requirements, and available power sources.

Yes, there are valve actuators specifically designed for hazardous environments, such as those with explosive atmospheres, which comply with industry standards for safety.

The size of the actuator depends on factors such as the torque or thrust required to operate the valve, which can be calculated based on the valve size, pressure, and flow conditions.

Yes, many valve actuators are designed for easy retrofitting onto existing manual valves, allowing for automation without the need for valve replacement.

Regular maintenance includes lubrication, inspection of mechanical components, and checking for leaks. Troubleshooting may involve checking electrical connections, pneumatic systems, and control signals.

Yes, valve actuators can be equipped with various control options, including remote control through wireless or wired networks, as well as integration into SCADA (Supervisory Control and Data Acquisition) systems.

Valve actuators are used in a wide range of industries and applications, including oil and gas, petrochemical, water treatment, HVAC (heating, ventilation, and air conditioning), pharmaceuticals, and food processing, among others. They are essential wherever automated flow control is required.

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