CQ & LP/LH

CQ

The CQ range provides an innovative fully-concentric and balanced actuator design for quarter-turn valves. The design features a helical mechanism that transforms linear piston motion into quarter-turn valve stem rotation. CQ actuators provide a much higher torque output for a given footprint than scotch-yoke designs typically utilised to operate many quarter-turn valve types. 

  • Weatherproof housing suitable for harsh environments
  • Applications: SIL3, functional integrity, safety, limited space
  • Pneumatic and hydraulic, single and double-acting
  • Up to 150,000 Nm (1,300,000 lbf.in) (higher upon request)
  • Instrument air
  • Mineral oil
  • Sweet, clean and dry natural gas / nitrogen
  • Standard: -30 to 100 °C (-22 to 212 °F)
  • PED Compliant: -20 to 160 °C (-4 to 320 °F)
  • Low: -40 to 160 °C (-40 to 320 °F) 
  • Extreme Low: -60 to 160 °C (-76 to 320°F)

Rotork CQ

LP and LH

Rotork linear actuators offer the advantages of compact size, high performance and a simple but highly reliable design. They are ideal for operating on/off and control functions of both globe and wedge gate valves. 

  • Electroless nickel-plated cylinders, chromium-plated piston rods
  • Hammer blow and standard valve stem coupling designs available
  • Thrust up to 5,000,000 N (1,124,000 lbf)
  • Actuators certified to ATEX 2014/34/EU
  • Actuators certified in accordance with PED 2014/68/EU

Rotork LP/LH

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