Venturi principle

Venturi principle

Operating principle

  • Pneumatic vacuum generators function based on the Venturi principle
  • Compressed air is introduced into the ejector (A)
  • Due to the reduced cross-section of the motive nozzle (the Venturi nozzle [B]), the compressed air is accelerated. The dynamic pressure increases, while the static air pressure simultaneously decreases
  • Once it has passed the motive nozzle, the accelerated air expands and a vacuum is generated
  • Air is “sucked” through the vacuum connection (D) into the ejector
  • The compressed air escapes from the ejector through the silencer (C) together with the “sucked-in” air.



  • Vacuum generators that function according to the Venturi principle are especially suitable for very high accelerations
  • Vacuum grippers can be controlled individually
  • Ejectors in different designs for centralized and decentralized vacuum generation depending on the application
  • Various power classes to suit the workpiece and application

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