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Scotch Yoke Actuator

Truespec represents the names you trust for scotch yoke actuators that can withstand the rigors of high-pressure oil and gas applications. Learn more about our offerings.


Bettis G-Series — Scotch Yoke Actuators

Bettis G-Series pneumatic and hydraulic actuators provide global customers with the latest in valve actuation design. It is a highly unique and reliable means of operating ball, butterfly or plug valves along with louvers, dampers and other 90-degree rotating mechanisms. G-Series actuators are back by a five-year materials and workmanship warranty, the best in the industry.

  • Specifications & Features
  • Available for operating temperature -40°C to + 66°C (-40°F to +150°F)
  • PED 97/23/EC compliant to meet the stringent requirements of pressure mounting vessels
  • Meets both IP66 and IP67M specifications for submergence and high pressure water deluge test, offering superior water ingress and corrosion protection
  • Suitable for use within the demanding applications of SIL environments
  • Available in both spring-return or double-acting configurations
  • Can operate with either a symmetric or canted yoke
  • Multi-configuration, modular design that enables safe field maintenance and reduced inventory costs
  • Optimized center of gravity makes it one-third lighter and one-half smaller than equivalent actuators
  • Interchangeable power and spring modules for quick reversal of the fail-safe mode

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Rotork GP, GH — Scotch Yoke Actuators

GP (pneumatic) and GH (hydraulic) range scotch yoke actuators are designed to provide a rotary, quarter-turn movement for either on/off or modulating duty. The rugged yet compact design is available with two different yoke designs. The classic symmetric yoke delivers peak torque at both ends of stroke. Alternatively, they can be supplied with canted torque arms designed to deliver peak torque at only one end of stroke. Use of canted arms can often reduce actuator size, weight and cost for valves with appropriate torque demand characteristics.

  • Specifications & Features
  • Pneumatic and hydraulic actuators in double-acting and spring-return configurations
  • Suitable for use in SIL2 and SIL3 rated safety systems
  • Certified to IP 66M/67M
  • Certified to ATEX 94/9/EC
  • Certified in accordance with PED 93/27/EC
  • Torque output to 600,000 Nm (5,000,000 lbf-in)

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