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Self-locking worm gear actuators designed for quarter-turn ball, butterfly and plug valve operation. Torque from 100–32,000 Nm, ±5° fine stroke adjustment, ISO 5211 direct mount and MOV compatible for electrical actuator upgrade without machining — built for demanding industrial and marine environments.
100 – 32,000 Nm
Up to IP67M
-20°C to +85°C
±5°
Quarter-turn manual worm gear
100 – 32,000 Nm (with gear reduction)
±5°
IP54 / IP55 / IP65 / IP67M
-20°C to +85°C
-45°C to +120°C
Ductile iron (cast iron optional)
Steel (stainless steel optional)
Heavy-duty bearing construction
Epoxy & PU coating — powder-coated handwheel
ISO 5211 valve mounting interface
ISO 5210 for electrical actuator compatibility
Self-locking worm gear — prevents back drive
Splined bush for accurate valve stem alignment
Casting, fabricated and chain type
Ball, butterfly, plug valves, dampers, HVAC
Turbines, boilers, and BOP systems.
Hazardous and high-pressure environments.
Desalination, RO and filtration systems.
Corrosive and explosive process media.
Self-Locking Worm Gear
Prevents reverse back-drive ensuring safe and stable valve positioning at all times.
ISO 5211 Mounting
Direct valve mounting without additional machining — plug and play installation.
Heavy-Duty Housing
Ductile iron construction engineered for demanding industrial environments.
Corrosion Protection
Epoxy & PU coating suitable for harsh service and aggressive atmospheres.
Smooth Manual Operation
Optimized gear ratios and bearing design for high mechanical advantage and easy operation.
Splined Bushing
Ensures accurate valve stem alignment for precise quarter-turn positioning.
MOV Compatible
Supports direct electrical actuator mounting with ISO 5210 flange — no machining required on site.
32,000 Nm
Max Torque
IP67M
Ingress Protection
ISO 5211
Mounting Standard
Self-Locking
Worm Gear
MOV Ready
Electric Actuator Compatible