Neles® Pneumatic Linear Diaphragm & Cylinder Actuator

Metso’s Neles® linear diaphragm & cylinder actuators provide safe and reliable operation in control applications. The high performance internal coating resists wear and corrosion and easy maintenance guarantee a long life cycle. Available in a range of styles, contact us for more information.

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  • Heavy duty actuator designed for linear modulating control and on/off applications
  • Corrosion resistance coating against severe weather, chemical and petroleum environments
  • Wide size of selection available
  • High thrust performance by self-lubricating piston seal in cylinder
  • Optional handwheel for manual mode, volume tank, volume chamber available
  • Mechanical position limitation


  • High control performance, low friction
  • Simple and cost-effective design guarantee increased lifetime and reliability
  • Low cost, simple maintenance


  • Excellent accuracy and reliability in any applications
  • General or severe application where to perform the valve movement by pneumatic energy
  • Corrosive environment to be resisted by high performance internal coating
  • Replaceable inner parts guarantee a long life cycle
  • Refining & petrochemical
  • Power plant
  • Industrial gas
  • Offshore


  • Design: Pneumatic diaphragm & cylinder actuator
  • Temperature range:       -20 °C … +70 °C