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Flowserve - Limitorque - Pneumatic Actuators - Rack & Pinion - LRP

Pneumatic Actuators - Rack & Pinion - Limitorque LRP

BRAND: Limitorque

The Limitorque LRP series is a robust, reliable rack and pinion actuator designed for high performance automation of  quarter turn valves in a wide range of applications.


  • General Industry
  • Chemicals
  • Water
  • Oil & Gas
  • Power

industry sectors

  • Pulp & Paper
  • Mining
  • Steel & Primary Metals
  • Food & Beverage
  • Corn Wet Milling & Ethanol
  • Other Industries
  • Basic (Organic & Inorganic)
  • Specialty (Fine & Consumer)
  • Biofuels
  • Pharmaceutical
  • Water
  • Waste Water
  • Agriculture
  • Water Management
  • Downstream Processing
  • Nuclear
  • Conventional Steam
  • Geothermal
  • Combined Cycle
  • Concentrated Solar Power (CSP)
  • Biomass and MSW

ISO 9001 and 5211
Namur VDI/VDE 3845
IEC 61508 SC3
ATEX 2014/34/EU

Design Range

Torque Rating Range: Up to 1700 Nm output torque (1250 ft-lbf)

Operating Pressure Range: From 2 to 8,3 barg (29 to 120 psig)

Environmental Enclosures

NBR Buna, Viton®, and low temp. Nitrile sealing

Features & Benefits
  • Balanced double rack and pinion mechanism
  • Namur VDI/VDE 3845 top mouting pattern for easy fitting and interchangeability of accessories
  • ISO mounting with star drive output for simplified valve coupling
  • Unique support rods absorb side loads from piston, guaranteeing longer service life and high performance stability.
  • Spring return and double acting configurations available (fail open, fail close and fail-in-place capability)
  • High and Low temperature versions available: +150°C to -40°C (300°F to -40°F)
  • Fast acting version available on request
  • LimiGuard high performance  chemically bonded PTFE coating or Epoxy painting to customer specification, available on request

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.


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