Home Products VariStroke Linear Electro-Hydraulic Valve Actuator

VariStroke Linear Electro-Hydraulic Valve Actuator

VariStroke is Woodward’s line of linear electro-hydraulic valve actuators for operation of steam or hydro turbine control valves. These linear actuators utilize a low-pressure, hydraulic oil source (typically turbine lube oil) to provide its output… Read More

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Features & Benefits

  • Precise and stable control for responsive performance
  • Variable/configurable shaft lengths for various application requirements
  • Patented dirt tolerant and self-cleaning technology for increased reliability
  • High-torque valve and motor design (50 lbs chip shear)
  • Fast slew rates/times (up to 10”/sec)
  • Side-load tolerant for reducing potential oil leaks
  • Integrated driver (4-20 mA) and 11-point linearization table
  • Self-tuning adaptive control algorithm

Product Variants

    • Cylinder Bore Sizes:
      • 100mm (4 in)
      • 150mm (6 in)
      • 200mm (8 in)
      • 250mm (10 in)
      • 300mm (12 in)
    • Configuration
      • Integrated
      • Remote
      • Servo Valve Only
    • Cylinder – Max. Stroke
      • 100mm (4 in)
      • 150mm (6 in)
      • 200mm (8 in)
      • 250mm (10 in)
      • 300mm (12 in)
    • Action:
      • Double Acting
      • Single Acting
      • No Hydraulic Cylinder
    • Rod End
      • Male Thread
      • Female Thread
      • No Hydraulic Cylinder
    • Fail-Safe Direction:
      • Extend
      • Retract
      • No Hydraulic Cylinder
    • Compliance:
      • ATEX Zone 1
      • ATEX Zone 2

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