Electric Motor Actuator
Electric actuator for precise positioning and modulating control applications.
Technical Specifications
| Type | Quarter-Turn / Multi-Turn |
| Torque Range | Up to 20,000 Nm |
| Body Materials | Aluminum Alloy, Cast Iron |
| Voltage | 24V DC, 110V AC, 220V AC, 380V AC |
| Control Type | On-Off, Modulating (4-20 mA) |
| Mounting Standard | ISO 5211 |
| Protection Rating | IP67, IP68, Explosion-proof (Ex d) |
| Standards | IEC 60529, ATEX |
Applications
Gate valves, globe valves, ball valves, control applications
About the Electric Motor Actuator
The electric motor actuator uses an electric motor driving through a gearbox to produce the rotary or linear output motion needed to open and close industrial valves. Two output types serve different valve families: quarter-turn electric actuators (0°–90° rotation) for ball valves, butterfly valves, and plug valves; and multi-turn electric actuators (multiple full rotations) for gate valves, globe valves, and other rising-stem valves that require many turns of the handwheel to travel from open to close. The gearbox provides mechanical advantage, converting the motor's high-speed, low-torque output to the low-speed, high-torque motion needed to operate large valves against full differential pressure.
Electric actuators are preferred over pneumatic actuators wherever instrument air is unavailable, where precise intermediate positioning (modulating control to a 4-20 mA signal) is required, where the valve must hold position without continuous energy input (electric actuators hold position at de-energised rest whereas pneumatic spring-return actuators require continuous air pressure to hold), or where the valve cycling frequency is low enough that the slower electric actuation speed is acceptable. ATEX-certified explosion-proof electric actuators are available for hazardous area classification Zones 1 and 2 in oil, gas, and chemical plant environments. Vajra Industrial Solutions supplies electric actuators in torque ranges to 20,000 Nm in on/off and modulating versions with HART/Profibus/FF fieldbus communication options.
Where It's Used
Key industries and applications for the Electric Motor Actuator
Remote pipeline block valves
quarter-turn electric actuators on ball and butterfly valves at remote pipeline block valve stations where instrument air is unavailable; 380V 3-phase or 24V DC battery-backed supply; SCADA integration via 4-20mA feedback
Modulating process control
multi-turn electric actuators on globe and gate control valves in chemical plants and refineries for precise flow, level, and pressure regulation; 4-20mA input + position feedback (4-20mA or potentiometer) for PID loop integration
Water and wastewater treatment automation
quarter-turn and multi-turn IP68-rated electric actuators on SS316 butterfly and gate valves in submerged or flooded valve chambers in WTPs and WWTPs; sealed submersible design operates in permanent water immersion
HVAC and building automation
compact 24V DC quarter-turn electric actuators on 2"–12" butterfly valves for chilled and heating water zone control, AHU supply temperature regulation, and fan coil unit modulating control; BACnet or Modbus integration
Offshore and hazardous area
ATEX Ex d quarter-turn electric actuators (Zone 1/2) on ball and butterfly valves in platform process modules, wellhead areas, and storage tank manifolds; stainless or GRP enclosure for marine environment
How to Choose the Right Electric Motor Actuator
Select electric actuators over pneumatic when instrument air is unavailable at the valve location, when the valve requires modulating positioning (4-20mA input), or when a low cycling frequency means the faster closure time of pneumatic is not needed. Multi-turn for rising-stem valves (gate, globe); quarter-turn for rotary valves (ball, butterfly, plug). Key sizing inputs: required output torque or thrust at maximum differential pressure, voltage available, required closure time, and whether on/off or modulating control is needed. For hazardous areas, confirm ATEX zone and gas group for correct Ex certification.
Popular Configurations
Most commonly ordered specifications for the Electric Motor Actuator
Frequently Asked Questions
About Electric Motor Actuator - ordering, specs, delivery & compliance
What standards does the Electric Motor Actuator comply with?+
Our Electric Motor Actuator complies with IEC 60529, ATEX. All products are manufactured to international standards and come with full material test reports (MTR), dimensional inspection reports, and hydrostatic test certificates on request.
What materials are available for the Electric Motor Actuator?+
The Electric Motor Actuator is available in Aluminum Alloy, Cast Iron. Material selection depends on your process fluid, temperature, pressure, and corrosion requirements.
What is the delivery lead time for Electric Motor Actuator?+
Standard stock sizes are available for immediate dispatch from our Vadodara warehouse. Custom sizes and special materials typically have a lead time of 2–6 weeks depending on specifications. We serve customers across India within 1–7 business days and export to the Middle East, Southeast Asia, Europe, and the Americas with full export documentation.
Can I get a custom Electric Motor Actuator for a specific application?+
Yes. Vajra Industrial Solutions supplies custom-engineered actuators for specific process conditions. Submit your technical requirements - including pressure class, temperature range, fluid type, end connections, and any special trim or coating needs - via our RFQ form or WhatsApp, and our engineering team will respond within 24 hours.
What pressure ratings are available for the Electric Motor Actuator?+
The Electric Motor Actuator is available in pressure ratings of PN10 to PN400 (ANSI Class 150 to Class 2500). Higher-pressure classes are available for critical service applications in oil & gas, power generation, and chemical processing.
How do I request a quote for the Electric Motor Actuator?+
You can request a quote by clicking the "Request Quote" button on this page, filling out our RFQ form at vajravyuh.com/rfq, emailing us at sales@vajravyuh.com, or WhatsApping us directly at +91-9979774557. Please include quantity, size, pressure class, material grade, and end-connection type for the fastest response.
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