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Flowserve-Limitorque-Gearboxes - Quarter-Turn - WG series

Gearboxes - Quarter-Turn - WG series

BRAND: Limitorque

The Flowserve Limitorque WG series of worm gearboxes is designed for quarter-turn butterfly, ball, and plug valve applications as well as quarter-turn and multi-turn dampers and offers unsurpassed quality and longevity in a wide variety of weatherproof, submersible and buried-service applications.


  • General Industry
  • Water
  • Oil & Gas
  • Power

industry sectors

  • Pulp & Paper
  • Mining
  • Water
  • Waste Water
  • Midstream Transportation
  • Downstream Processing
  • Conventional Steam
  • Geothermal
  • Combined Cycle
Design Range

Torque Rating Range: Torque output to 326 000 ft-lb (442 000 Nm)

Features & Benefits
  • Extraordinary range of output speeds and torques made possible by compatibility with a wide array of numerous electric actuators
  • ​​​​​​Weatherproof, temporary submersion, and buried services
  • Features self locking gearing
  • Quarter-turn or multi-turn, manual or motorized operation available 
  • -300C to 900C ambient temperature range
  • Reduced downtime provided by the removable, top-entry, splined valve shaft adapter, which ensures proper engagement of the valve stem
  • Increased uptime due to rugged ductile iron housing, roller bearing-supported shaft and well-designed sealing, which stands up to tough conditions

Protected against the ingress of water and dust

Suitable for temporary submersion to IP67 and IP68

Buried Service
Suitable for in-ground installation


Flowserve Limitorque offers practical product training at our global automation headquarters in Lynchburg, Va., and our state-of-the-art valve automation center in Houston. Taught by qualified instructors in classroom settings, these three-day courses emphasize hands-on training. Key topics include the principles of actuator functionality as well as actuator setup and commissioning, maintenance and troubleshooting. View available courses and dates.


Our global expertise and local service centers ensure that you stay up and running. Learn more about our services.

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Use Flowserve VirtualPlant 3D models of various plant types to help you 'see' our capabilities in key industrial applications.

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