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Flowserve Limitorque Intrusive Multi-Turn Actuators SMB

Intrusive Multi-Turn Actuators - SMB

BRAND: Limitorque

The Flowserve Limitorque SMB electric actuator is designed for critical and severe service applications in nuclear and thermal power, water, oil & gas industries.


  • General Industry
  • Water
  • Oil & Gas
  • Power

industry sectors

  • Pulp & Paper
  • Mining
  • Steel & Primary Metals
  • Water
  • Waste Water
  • Upstream Exploration & Production
  • Midstream Transportation
  • Downstream Processing
  • Nuclear
  • Conventional Steam
  • Geothermal
  • Combined Cycle


Design Range

Torque Rating Range: Output torque to 60,000 ft. lbs (81 349 Nm)
Thrust Rating Range: Output thrust to 500,000 lbs (2224 kN)

Features & Benefits
  • Long service life with rugged with cast iron housing and precision-machined gearing
  • Extreme environment performance enabled by nuclear, weatherproof, submersibleor explosion-proof construction
  • Lower maintenance and downtime owing to torque-limiting feature, which de-energizes the motor to prevent valve damage in the event of an obstruction
  • Fully qualified for nuclear applications to IEEE 384, 323 and 344

No Controls Unit, where the actuator motor controls are remotely mounted in motor control centers

IRC Controls package
Integral Reversing Controls package for open/close control


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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