Main applications

  • Advanced treatment / 3.stage
  • Bio. treatment / 2.stage
  • Biofuels
  • Biogas
  • Breweries
  • Chemical industry
  • Cryogenics
  • Desalination
  • Drainage
  • Drainage pump stations
  • Fire fighting and sprinkler systems
  • Flood / stormwater holding tanks
  • Flood control
  • Flue gas desulphurization (FGD)
  • General Processes
  • Groundwaterlevel (mining/buildings)
  • Industrial waste water
  • Industry engineering
  • Irrigation
  • Lake, Damwater extraction
  • Marine
  • Mech. treatment / 1.stage
  • Municipal waste water
  • Pharmaceutical/Biotechnology
  • Pressure boosting
  • Rawwater transport
  • Sea -& Riverwater Extraction
  • Sewage treatment plants
  • Snow guns
  • Special processes
  • Steel
  • Sugar
  • Surface drainage
  • Surface treatment
  • Suspended solids treatment
  • Systems
  • Tank cleaning
  • Waste water
  • Waste water transport
  • Water
  • Water Extraction
  • Water supply
  • Water works
  • Watertransport
  • Watertreatment
  • Well


Single-acting pneumatic actuator for mounting on quarter-turn valves (butterfly valves or ball valves). Actuator flange to ISO 5211. Control pressure up to 8 bar. Mounts on valve stems with square end or flat end. Force transmission via scotch-yoke kinematics provides output torques of up to 4000 Nm which are ideal for actuating quarter-turn valves. Reset to fail-safe position in case of control air failure is effected by means of spring assemblies. Equipped with a visual position indicator and, depending on the actuator size, adjustable travel stops for open/closed position or closed position as standard. Optional separate or integrated manual override. Suitable for mounting control unit type series AMTROBOX, AMTRONIC, SMARTRONIC or any other device with an interface to VDI/VDE 3845.


All applications in water engineering, energy engineering, and industry.

Further technical information about DYNACTAIR

Overview of technical data

Actuator effect Single-acting
Manual override for actuator Yes
Type of control Continuous-action actuation
Actuator movement Rotation
Max. perm. temp., control press. medium 80.0 (°C)
Min. control pressure 3.0 (bar)
Max. torque 8000.0 (Nm)
Max. ambient temperature, actuator 80.0 (°C)
Min. ambient temperature, actuator -20.0 (°C)
Actuator position indicator Yes
Actuator position feedback Yes