GREATORK Worm Gear Quarter-Turn Electric Actuator for Large Valves and Heavy-Duty Automation
Large quarter-turn valves require more than just a larger size. Discover how GREATORK worm gear quarter-turn electric actuators provide up to 450,000 N·m torque, self-locking stability, and BT4 explosion protection for pipelines and heavy industries.
Big Valves Need More Than a Bigger Actuator.
Large quarter-turn valves require more than simply increasing actuator size. High output torque, transmission efficiency, explosion protection and reliable valve positioning all become critical in demanding industrial environments.
The GREATORK Worm Gear Quarter-Turn Electric Actuator is designed for large butterfly valves, ball valves and process isolation valves used in oil & gas, petrochemical, coal chemical and gas transmission applications.
Key features include:
✔ Output torque from 2,000 to 450,000 N·m
✔ BT4 explosion-proof design for hazardous areas
✔ Self-locking worm gear transmission for stable valve positioning after shutdown
✔ ISO 5211 direct mounting with high positioning accuracy, supporting 4–20 mA modulation, local handwheel operation and overload protection
Typical applications include:
• Oil & Gas Pipelines • Petrochemical Plants • Coal Chemical Plants • Large Ball Valves • Large Butterfly Valves • Plug Valves
Reliable valve automation starts with the right transmission system.
Engineered to Replace. Built to Outperform.
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Talk to Greatork engineering team
Share your valve type, torque or thrust requirement, operating environment, and control preference. Our team can help match the right actuation solution.
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