AT- HD Series (Scotch Yoke)

The Air-Torque AT-HD Heavy Duty Actuator series is designed for on/off and modulating duties. AT-HD Actuators can be either with symmetric or canted yoke. It is available in both double acting & spring return configuration.


Product Certificates

  • ATEX 2014/34/EU
  • DNV Type Approval
  • SIL3
  • EU Declaration of conformity
  • TR CU 012/2011
  • IP67
  • UK CA

Special Function/ Version:

  • Valve link
  • Manual Override
  • Fast Acting
  • Damper
  • HIPPS Integration
  • PST Function
  • Customization

Product Range

  • 7 different yoke/models’ group both in double acting and spring return
  • Output torque up to 200,000Nm
  • Painting according to the Air torque or Project standard.
  • 3 different working temperature (from-60°C/-76°F up to +150°C/+302°F)

Technical Details

  • Mechanism: Scotch yoke
  • 90° rotation
  • Housing base material: Carbon Steel
  • -40°C as standard lower limit of temp execution
  • Multiple choice of ISO flange and drive shaft connection.
  • Fasteners in Stainless steel as a base
  • Typically, no external tie rods for the pneumatic module.
  • Stroke adjustment range -5°/+15° and 85°/95°
  • Available with pneumatic or hydraulic cylinder
  • Supply media: Compressed dry or lubricated air and inert gasses, process gasses and hydraulic oil (for hydraulic version)