Hearken electric valve actuators use a modular, standard ISO 5211 design. They mount easily onto your ball, butterfly, gate, and globe valves. Multiple independent production lines guarantee a 15-to-25 day standard lead time. Every unit comes with CE and ATEX certifications for easy global compliance.
Electric Actuators By Motion
HEARKEN industrial electric actuators are available in various configurations. The main options include rotary, multi-turn, linear, explosion-proof, and spring-return designs.

Rotary Electric Actuator
Rotary electric actuators drive all kinds of quarter-turn valves. Both single and double-acting types provide accurate on-off control and precise flow throttling.

Multi-Turn Electric Actuator
A multi-turn electric actuator uses a motor to drive a multi-stage gear system, converting multi-turn rotation into straight-line movement. It is ideal for gate valves and globe valves.

Electric Ball Valve Actuator
Electric ball valve actuators turn ball valves 90 degrees to control the flow. They are built for quick isolation, holding back high pressure, and managing fluid.

Electric Butterfly Valve Actuator
Electric butterfly valve actuators turn butterfly valves 90 degrees smoothly. They work well in big pipes, air ventilation systems, and low-pressure lines.

Electric Gate Valve Actuator
The electric gate valve actuator uses a motor to drive the gate valve up and down, achieving reliable line on-off control and high-pressure sealing.

Electric Globe Valve Actuator
Hearken Flow achieves precise flow regulation and throttling control by driving the stop valve linearly through a motor.
Linear Electric Actuator
The linear electric actuator directly motorized drive to the valve . This design is ideal for high-precision management of control valves and globe valves.
Electric Actuator By Features

On-off Electric Actuators
The on-off electric actuator rapidly opens and closes ball, butterfly, or gate valves. It is ideal for quick shut-offs and safety systems.
Explosion-proof Electric Actuators
The explosion-proof electric actuator features Ex d IIC T6 safety and IP67 protection. It is designed for hazardous environments in the oil, gas, and chemical industries.

Modulating Electric Actuators
The modulating electric actuator uses 4-20mA signals to precisely adjust the valve position. It is suitable for continuous flow and pressure control.

Intelligent Electric Actuators
The intelligent electric actuator integrates smart valve control, Modbus communication, and self-diagnosis. It is widely used in modern industrial automation.
Integral Electric Actuators
The integral electric actuator features a built-in controller and an IP67-rated weatherproof housing. It supports local and remote control, saving space in compact installations.

Fast-acting Electric Actuators
The fast-acting electric actuator ensures rapid valve shut-off during emergencies. It is highly suitable for quick-response ball and butterfly valves.
Spring Return Electric Actuators
The spring return electric actuator uses a mechanical spring to automatically reset the valve during power failures. This fail-safe feature ensures pipeline safety.
Electric Actuators: Working Principles, Types & Model Selection
What Is an Electric Actuator?
An electric actuator is a motorized drive unit that uses electric power to open, close, or throttle pipeline valves without compressed air. Powered by standard AC or DC supply, the internal motor drives reduction gears to deliver rotational torque for quarter-turn ball and butterfly valves, multi-turn rotation for gate and globe valves, or linear push-pull thrust for control valves.
How It Works
- Control Signal & Motor Start: The motor starts when it receives an open/close or 4–20 mA positioning signal from the control room or local pushbuttons.
- Gear Reduction & Torque Boost: The motor drives reduction gears (worm, planetary, or spur gears) that slow down motor speed and multiply output torque to overcome valve seating resistance.
- Valve Stem Travel: The drive sleeve turns quarter-turn valves 90°, rotates the drive nut of rising-stem gate/globe valves, or turns an internal nut to push a linear spindle up and down.

| Feature | Electric Actuators | Pneumatic Actuators |
| Power Source | Runs on plant power wires (AC or DC); needs no air pipes. | Runs on compressed air; needs air compressors, filters, and air pipes. |
| Operating Speed | Controlled stroke time (around 5 to 45s); stops water hammer in pipes. | Fast stroke time (around 1 to 3s); best for quick shut-off and frequent use. |
| Control Accuracy | High stopping accuracy with simple wiring; holds steady against flow force. | Fast response time; needs an air positioner to hold steady positions. |
| Position Holding on Failure | Gears lock in place by design; stays in position without extra power. | Air holds position; needs extra lock valves to stay in place if air cuts off. |
| Fail-Safe Mode | Needs built-in springs, backup batteries, or capacitors to auto-reset. | Built-in springs return the valve to open or closed when air drops. |
| Cold Weather Use | Built-in heaters stop inside water and ice build-up in cold sites. | Needs clean, dry air to keep water from freezing inside the air lines. |
| Hazardous Areas | Needs heavy explosion-proof metal housing for explosive zones. | No electrical sparks by nature; simple and safe for explosive zones. |
Choose Your Electric Actuator by Motion Type
| Motion Type | Typical Valve Fit | Output Range | Model Series |
| Quarter-Turn Actuators | Ball, butterfly, and plug valves (DN15 to DN600+) | 6 N·m to 5,000 N·m | • HEA |
| • HEA(A) | |||
| • HEN | |||
| • HEA(D) | |||
| • HUS | |||
| • HEX | |||
| • HQT | |||
| • HQ | |||
| Multi-Turn Actuators | Rising-stem gate, globe, and knife gate valves (DN15 to DN600) | 35 N·m to 3,000 N·m (Custom to 6,000 N·m) | • HEA(M) |
| • HMT | |||
| • HMT(R) | |||
| Linear Actuators | Globe control valves and linear dampers (DN15 to DN300) | 1 kN to 78.37 kN Thrust (Stroke: 25 to 115 mm) | • HUBL |
| • HUS Linear | |||
| • HUSLT | |||
| • HML |
Proven Performance Across Industries
HEARKEN industrial electric actuators are engineered to handle complex media and critical environments. From clean water plants to hazardous refineries, these units deliver precise fluid control for every industrial sector.

Hazardous Zone Certifications
Global Ex Standards
These explosion-proof actuators fully comply with Ex d IIB/IIC standards. The enclosure traps any internal sparks, stopping external gases from igniting. These electric valve assemblies work safely in Zone 1 and Zone 2 environments.
Safe Temperature Class (T4)
The actuator housing keeps its surface temperature below 135°C to meet T4 requirements. This temperature limit prevents hazardous dust or gas in the air from auto-igniting.
Built for Extreme Environments
Rugged Housing
Standard housings feature aluminum alloy with an epoxy powder coating. Die-cast aluminum and ABS are also available. These industrial electric actuators resist heavy impacts and chemical exposure.
Wide Temperature Tolerance
These actuators perform reliably in harsh climates. The standard operating temperature range covers -20°C to +60°C. Customized seals and lubricants also extend operation to extreme zones from -60°C up to +150°C.

Why Source from HEARKEN CONTROL


Factory Direct Pricing: Hearken is the original actuator manufacturer in China. Our factory produces core components like gears and housings in-house. Sourcing directly from us cuts out distributor markups. This also ensures consistent quality across large batches.
Actuator-Specific Testing: Hearken does not just check appearances. Before packing, every unit goes through torque calibration, electrical insulation tests, and underwater airtightness checks. This guarantees true IP68 performance.
Modular Assembly for Speed: Hearken stocks modular motors and ISO 5211 gearboxes. This allows our production team to assemble custom voltage or torque configurations in just 7 days.
Smart Logic Configuration: Hearken customizes the PCBA logic to your exact needs before shipping. Our engineers pre-set Modbus addresses, delay timers, and reverse-acting signal protocols. This completely saves you hours of on-site programming.
48-Hour Electronic Burn-In:Every Hearken actuator goes through a 48-hour high-temperature burn-in test before shipping. Our quality team stress-tests the control board and motor capacitor. This screens out early component failures.
Torque & Logic Verification: Hearken can provide an individual torque test report for single unit. This proves it meets your valve’s breakaway torque requirements. Our technical team also supplies custom wiring diagrams tailored to your PLC logic.
Production
Electric Actuator Production Process
As a leading electric valve actuator supplier in China, Hearken uses premium raw materials and professional testing equipment to manufacture high-quality electric actuators.
Procurement
Hearken controls quality right from the raw materials. Every batch goes through strict quality tests. We inspect hardness, tensile strength, magnetic permeability, insulation performance, and precision grades.
Assembly
Hearken’s professional and technical workers are assembling customized electric actuators.Hearken’s experienced technical workers handle the assembly for all customized electric actuators.
Testing
After assembly, every electric actuator must pass multiple performance tests. Our team verifies the voltage, current, torque, speed, and power output to ensure stable and reliable operation.
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More About Our Company
| Parameters | Rotary Electric Actuator | Multi-turn Electric Actuator | Linear Electric Actuator |
| Structural Principle | Converted into rotary motion by motor drive | The multi-stage transmission mechanism is driven by a motor, and multiple turns of rotation are converted into linear displacement. | Electric drive converts into linear motion |
| Rotation/stroke angle | 90°, 180° | Multiple turns (e.g. 360° or custom number of turns) | Customized linear travel |
| Action Mode | Switch type, regulating type, intelligent switch type, intelligent regulating type, Modbus protocol, etc. | Switch type, regulating type, intelligent switch type, intelligent regulating type, Modbus protocol, etc. | Switch type, regulating type, etc. |
| Main material | Aluminum alloy | Aluminum alloy | Aluminum alloy |
| Torque/thrust Range | 1.5Nm~5000Nm | 50Nm~5000Nm | 1.5KN~50KN |
| Ambient Temperature | -40℃~120℃ | -20℃~80℃ | -20℃~80℃ |
| Interface standards | ISO 5211 standard or customized interface | ||
| Typical applications | Ball valves, butterfly valves and other rotary valves | Gate valves, stop valves and other multi-turn valves | Regulating valves, knife gate valves and other linear motion valves |

CE-Electric-Actuators

CE-Pneumatic-Actuators-(2)

Explosion-Proof-Of-Valve-Position-Monitor

IP67-Electric-Actuators

IP67-Pneumatic-Actuators

IP68-Electric-Actuator-Issued-By-TUV
FAQ
Yes. The entire lineup includes built-in thermal protection. The system automatically cuts power if the motor overheats and resets once the temperature cools down.
These electric valve actuators support Profibus DP/PA, Modbus RTU, Modbus Fieldbus, HART, Foundation Fieldbus (FF), and DeviceNet.
An optional anti-condensation space heater is available. It activates automatically when temperatures drop, keeping internal electronics dry to prevent short circuits.
Yes. In addition to standard 24VDC and 220VAC, the product line supports standard industrial 380VAC three-phase power for stable, high-torque output.
Every Hearken Flow electric valve actuator comes standard with a hex wrench override. A declutchable manual override handwheel is also available for emergency operation.
For precise flow control, these modulating type actuators feature an advanced control unit. The system limits positioning error to under 0.5%.
Yes. These industrial actuators utilize specialized low-temperature seals and lubricants. This heavy-duty build ensures reliable operation down to -60°C.
Yes. The Hearken Flow housing can be customized to any RAL color. Custom pigment matching requires a slightly longer lead time.
Yes. The Hearken Flow HEAS series features high-grade engineering nylon housings. This lightweight option is ideal for bulk wholesale buyers.




















