AUMA SQ Part-Turn Electric Actuator
Overview
The AUMA SQ part-turn electric actuator is a modular allrounder designed for open-close duty and positioning duty on quarter-turn valves such as ball valves, butterfly valves, and dampers. Covering a torque range from 50 Nm to 2500 Nm, the SQ .2 type range gives system integrators a scalable actuator platform that can be paired with control options ranging from simple OPEN-CLOSE controls through to micro-controlled versions with operating data logging and fieldbus interface integration.
For water treatment, oil and gas, and power generation facilities across Oman and the wider GCC, the AUMA SQ provides reliable, precisely controlled valve automation for quarter-turn applications where accurate positioning and dependable open-close cycling are essential to process operation. Seven Star LLC supplies the AUMA SQ part-turn electric actuator to customers across Muscat, Sohar, Salalah, and the Sultanate of Oman as an authorized AUMA distribution partner, providing genuine factory-sourced instruments with full documentation and technical support.
Measurement and Operating Principle
The SQ actuator uses an integral electric motor and reduction gearing to transmit torque to the valve for a rotation of one revolution or less, in compliance with EN ISO 5211 valve attachment standards. The actuator is available in classes A and B for short-time duty S2 (15 minutes) and, with 3-phase motors, in type of duty S4 – 25% class C in compliance with EN 15714-2, giving specifying engineers flexibility to match the actuator’s duty rating to the cycling frequency required by the specific valve application.
Internal end stops allow precise approaching of end positions during handwheel operation, ensuring the valve reaches its fully open or fully closed position accurately even during manual override. Swing angle coverage of 75° to 105° accommodates the full range of common quarter-turn valve geometries, with operating times for a 90° stroke ranging from 4 to 100 seconds depending on the selected actuator size and gearing configuration.
Engineering Design of the AUMA SQ
The SQ actuator carries an IP68 enclosure protection rating, providing reliable sealing against dust and water ingress even in submerged or heavily washed-down installations common in water and wastewater treatment facilities. The actuator’s KS corrosion protection package extends service life in demanding outdoor and coastal environments, an important consideration for installations across Oman’s coastal industrial zones. Ambient temperature rating from −30°C to +70°C ensures reliable operation across the full range of GCC climate conditions, from cool winter mornings to peak summer heat.
The SQ’s modular design allows the same mechanical actuator platform to be combined with a wide range of AUMA control options, from basic electromechanical OPEN-CLOSE controls to intelligent AUMATIC controls offering local and remote positioning, diagnostics, and fieldbus communication (Profibus, Modbus, Foundation Fieldbus, HART, and others). This modularity allows plant standardization on a single actuator mechanical platform while selecting the appropriate control sophistication for each individual valve application.
Key Features
- Torque range 50 Nm to 2500 Nm for open-close and positioning duty
- Compliant with EN ISO 5211 valve attachment standard
- 90° operating time from 4 to 100 seconds depending on size
- Swing angle coverage 75° to 105°
- IP68 enclosure protection rating
- KS corrosion protection for demanding environments
- Ambient temperature range −30°C to +70°C
- Modular design compatible with a wide range of AUMA control options
Industrial Applications
The AUMA SQ is widely used for automating quarter-turn valves in water and wastewater treatment plants, oil and gas processing facilities, and power generation plants, where reliable open-close and positioning control of ball valves, butterfly valves, and dampers is required. Its combination of robust mechanical design and modular control options makes it suitable for both simple isolation valve automation and more sophisticated positioning duty applications requiring accurate intermediate valve positions.
Across Oman’s water infrastructure, oil and gas, and power sectors, including facilities supporting the Sohar and Salalah economic zones, the AUMA SQ gives plant engineers a proven, globally trusted actuator platform for quarter-turn valve automation. As an authorized AUMA partner, Seven Star LLC supports these projects throughout the Sultanate of Oman with genuine factory-sourced actuators, sizing assistance, and after-sales support.
Technical Specifications
| Model | AUMA SQ (.2 type range) |
| Type | Part-turn electric actuator |
| Torque Range | 50 Nm to 2500 Nm |
| Duty | Open-close and positioning duty (Class A/B, S2-15min), S4-25% (3-phase) |
| 90° Operating Time | 4 to 100 seconds |
| Swing Angle | 75° to 105° |
| Enclosure Protection | IP68 |
| Ambient Temperature | −30°C to +70°C |
| Manufacturer | AUMA |
Why Choose Seven Star LLC for AUMA Electric Actuators
An electric part-turn actuator’s torque, speed, and control configuration only deliver reliable valve operation when matched correctly to the specific valve’s operating torque requirements and your control philosophy, whether that is simple open-close duty or modulating control. Seven Star LLC works with your instrumentation and mechanical engineers to confirm the correct AUMA SQ sizing and control unit configuration for your valve before order confirmation, drawing on our authorized AUMA partnership across Oman and the wider GCC. We also support process plants across Sohar and Salalah with spare actuator and control module planning, keeping motor-operated valves maintainable without extended waits on international parts sourcing.
Order Your AUMA SQ Today
Contact Seven Star LLC to request a quotation, datasheet, or technical consultation for the AUMA SQ part-turn electric actuator. As an authorized AUMA distribution partner serving Muscat, Sohar, Salalah, and the greater Sultanate of Oman, Seven Star LLC supplies genuine, factory-sourced instrumentation with full documentation and dedicated technical support for valve automation projects across the GCC.
Related Products
AUMA is a world-renowned manufacturer of electric actuators and valve control systems, providing reliable automation solutions for industrial flow control applications. Founded in Germany, AUMA has decades of experience in designing durable and efficient actuators for power generation, oil & gas, water treatment, and process industries.
Its comprehensive product portfolio includes multi-turn and part-turn actuators, gearboxes, and control units designed for precision, safety, and long service life. AUMA’s technologies ensure smooth and automated operation of valves and dampers under the toughest industrial conditions.
Seven Star LLC supplies authentic AUMA electric actuators and valve control systems to clients across the Middle East, offering dependable German engineering and local technical support for high-performance automation.
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