AUMA SQV Variable-Speed Part-Turn Actuator
Overview: Adjustable Operating Speed for Refined Valve Control
The AUMA SQV Variable-Speed Part-Turn Actuator enhances the proven AUMA SQ/SQR part-turn platform with variable operating time capability, paired with ACV 01.2 actuator controls to offer a wide operating time range with a control ratio of up to 1:10. Where a standard SQ actuator runs at a fixed operating speed, the SQV allows the valve’s travel speed to be tailored to the application – slowing down for sensitive processes prone to pressure surge, or running faster where rapid response is preferred – without changing the actuator hardware.
As a trusted supplier of AUMA valve actuators, Seven Star LLC sources and supplies the SQV variable-speed part-turn actuator to refineries, water treatment plants, and process industries across Oman and the wider GCC. Because valve closure speed directly affects water hammer and pressure surge risk in many pipeline applications, Seven Star LLC helps engineering teams specify the SQV configuration that matches their process dynamics.
Working Principle: Programmable Speed Profiles
The SQV actuator is paired with ACV 01.2 actuator controls, which govern motor speed electronically to deliver a programmable operating time profile rather than the single fixed speed of a standard AC induction motor actuator. This allows the actuator to execute soft start and stop behavior for gentle valve operation, and to avoid pressure surge by following an operating speed profile tailored to the specific pipeline or process characteristics – for example, running at full speed through the middle of the valve’s travel but slowing significantly as it approaches the fully closed position, reducing the water hammer risk that a sudden full-speed valve closure would otherwise create.
Part-turn actuators of the SQV type range are designed for open-close duty and positioning duty (ISO 22153 Classes A and B), corresponding to short-time duty S2-15 min, the same duty classification as the standard SQ but with the added benefit of the variable operating time ratio for refined process control.
Engineering Design of the SQV Actuator
The SQV is built to IP68 protection standard with valve attachments conforming to DIN and ISO valve mounting standards, and covers a torque range of approximately 150 to 2,400 Nm with rotation angles from 75° to 105°. Electrical connection is made via AUMA’s plug/socket connector as standard, with terminal connection available as an option, and cable entries are available in different versions to suit project cabling requirements.
The ACV 01.2 controls integrated with the SQV provide programmable, potential-free output contacts for status signaling back to the DCS, along with support for intermediate position switches, tandem switch versions, remote position transmitters, and magnetic limit and torque transmitters as options. Wide ambient temperature range and high-quality corrosion protection support reliable field operation across demanding installation environments.
Key Features
The AUMA SQV Variable-Speed Part-Turn Actuator delivers programmable operating speed for refined valve control. Key characteristics include:
- Variable operating time ratio up to 1:10, paired with ACV 01.2 actuator controls.
- Soft start and stop behavior for gentle valve operation.
- Programmable speed profile to avoid pressure surge and water hammer during valve closure.
- Torque range from approximately 150 Nm to 2,400 Nm; rotation angle 75° to 105°.
- IP68 protection class with high-quality corrosion protection and wide ambient temperature range.
- Valve attachments conforming to DIN and ISO standards.
- Programmable, potential-free output contacts for status signaling to the DCS.
Industrial Applications
The SQV actuator is deployed wherever variable valve closure speed provides a process or pipeline protection benefit, including water and wastewater pipeline isolation valves prone to water hammer, pump station discharge valves, and process lines where sudden flow interruption could create damaging pressure transients. Its programmable speed profile capability makes it a preferred choice over a fixed-speed SQ actuator in these surge-sensitive applications.
Seven Star LLC supports water authorities, refinery engineering teams, and EPC contractors across Oman, Muscat, Sohar, and the broader GCC region with sourcing of AUMA SQV variable-speed actuators, helping projects protect pipeline infrastructure from pressure surge damage.
Technical Specifications
The table below summarizes the core specifications of the AUMA SQV Variable-Speed Part-Turn Actuator as supplied by Seven Star LLC.
| Parameter | Specification |
|---|---|
| Model | AUMA SQV Series |
| Type | Electric, variable-speed, part-turn actuator |
| Actuator Controls | ACV 01.2 |
| Operating Time Ratio | Up to 1:10 |
| Motor | Three-phase or single-phase AC |
| Protection Class | IP68 |
| Torque Range | Approx. 150 Nm to 2,400 Nm |
| Rotation Angle | 75° to 105° |
| Ambient Temperature | -30°C to +70°C |
| Duty Rating | Open-close and positioning duty (Classes A and B), S2-15 min |
| Valve Attachment | DIN and ISO standards |
Why Choose Seven Star LLC for Surge-Sensitive Valve Automation
Specifying variable-speed actuation correctly means understanding the actual pipeline dynamics that create water hammer risk at a given valve location – a generic fixed-speed actuator on a large-diameter pump discharge line can create exactly the pressure transient the plant is trying to avoid, while an SQV programmed with the wrong speed profile provides little advantage over a standard SQ. Seven Star LLC’s engineers review the pipeline’s flow characteristics and surge sensitivity with the customer before the SQV is specified, helping configure the ACV 01.2 speed profile to actually protect the infrastructure it’s automating. We also support water authorities and refinery engineering teams across Oman with commissioning guidance for the soft start/stop programming, and coordinate delivery for pump station and pipeline isolation valve projects across Muscat, Sohar, and the wider GCC.
Request a Quote for AUMA SQV Variable-Speed Part-Turn Actuator
Seven Star LLC supplies the AUMA SQV variable-speed part-turn actuator with full manufacturer documentation and regional technical support. Contact our instrumentation and valve automation division for a formal RFQ, to confirm the correct speed profile and actuator size for your pipeline application, or to obtain the complete technical datasheet. Seven Star LLC ensures every unit shipped across Oman and the GCC is genuine, correctly configured, and backed by local engineering support.
Related Products
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AUMA actuator and gearbox types
SA multi-turn actuators handle open-close duty on gate and globe valves, and SAR is the modulating version; the listing includes the SA 07.2, SA 10.2 and SA 25.1. SAEx and SAREx are the explosion-proof equivalents. Part-turn duty on ball and butterfly valves is covered by SQ and the modulating SQR, or by an SA actuator combined with a GS part-turn gearbox. LE linear thrust units convert multi-turn output to thrust, and GHT multi-turn gearboxes extend the torque range up to 120,000 Nm. PROFOX is the compact actuator line. Special items include the seawater-resistant SGM and SGMR part-turn actuators with bronze housings, the SVC and SVCR globe valve actuators and the FQM fail-safe unit. Integral controls come as AM or AC versions.Where AUMA electric actuators are used
AUMA actuators are found in water, power, oil and gas, marine and general industry. In practice that means isolation and control valves in water treatment and pumping stations, power plant steam and cooling systems, tank farms and pipelines, and sluice gates and dampers.Ordering AUMA actuators and parts: what we need
For a replacement send photos of the actuator, motor and controls nameplates: type, order number, serial number and wiring diagram number. For a new actuator we need:- valve type, required torque or thrust, and turns or stroke
- valve mounting flange and stem or shaft details
- output speed, duty (open-close or modulating)
- supply voltage and frequency, control signals or fieldbus
- enclosure protection, ambient temperature, Ex requirement
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