Hydraulic Actuators

Our range of Hydraulic Actuators includes heavy duty scotch yoke, Helical Spline, Vane type and heavy duty linear cylinder.

Pressures range from 3.5 bar to 400 bar (although not with a single design) and include designs for topside and subsea applications.

Designs shown here are  hydraulic ring-main supplied, using the process facility existing hydraulic circuits. For self-contained units see Electro-Hydraulic actuators.

We recommend that Hydraulic Actautors are protected from contamination by fitting a Hydraulic Filter and from excess pressure by fitting a Hydraulic Regulator and/or a Pressure relief Valve, both of which we are happy to specify and supply as part of our package.


  • Double Acting (DA)
  • Spring Return (SR)
  • Modulating (Control) including HART facility
  • Torque range – up to 1,500,000NM
  • Thrust range – up to 250KN
  • Supply – min 3.5 bar, max 207 bar
  • Temperatures down to -60C
  • Approvals – CE, ATEX, SIL4, GOST, InMetro, Kosha, Nepsi, CSA/UL
  • Painting – Epoxy paint to customer or project specification
  • Accessories – see Component supply
  • Automation systems – see Automation systems

Additional Services

  • Automation system design using CAD
  • Supply of complete assembled and tested automated Valves
  • Design and supply of valve to actuator adaption kits
  • Design and supply of control systems, control panels, cabinets and power units (HPU)
  • Fitting of automation assembly to free-issue Valves
  • Fitting and Testing of customer supplied components (engineering and labour only)