Chinese Gate Valve Body AUMA SA Multi-turn Electric Control Valve Actuators with GST Spur Gearboxes

The AUMA SA + GST combination integrates the SA 07.2 – SA 16.2 multi-turn actuators with GST 10.1 – GST 40.1 spur gearboxes to deliver high-torque solutions for demanding valve automation. The SA actuators provide base torque up to 1,000 Nm with 3-phase AC motors, while the GST gearboxes multiply this torque up to 63,000 Nm through multi-stage reductions. This NORM configuration (without integral controls) is engineered for open-close and modulating duties, ensuring reliable rotary motion for large-diameter valves in industrial systems.

• Multi-stage torque multiplication with reduction ratios from 11:1 to 2,025:1 for customized output.
• Self-locking design in SA actuators (up to 90 rpm at 50 Hz) prevents backdrive.
• Modular assembly with EN ISO 5210/DIN 3210/DIN 3338 interfaces for easy valve mounting.
• Overload protection via adjustable torque switching (±20% tolerance).
• Optional second shaft end for additional drives or indicators.
• Corrosion-resistant options (KS/KX) for harsh environments.

• High-torque gate valves in pipelines and water systems.
• Large globe valves in power plants.
• Chemical processing for corrosive media.
• Oil & gas for choke and isolation valves.
• Mining for slurry control valves.

• How to select reduction ratio? Based on required output torque; e.g., 11:1 for GST 10.1 doubles input.
• Is self-locking available? Yes in SA for lower speeds; GST maintains this property.
• What if higher torque needed? Use multi-stage GST up to 2,025:1; consult AUMA.
• Can I add a second shaft? Yes, optional with protective cap for extensions.
• How to mount? Direct flange to valve; see dimensions for spigot options.

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+8613916209596

Email: svetama@gbsxj.com

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