Gas Jet Ventilators

Gas jet ventilators operate on the ejector principle and are used to convey air, gases and vapours against small pressure differences. The high velocity gas jet emerging from the motive nozzle draws in and accelerates the suction medium either from the surrounding atmosphere or from the suction housing, depending upon the ventilator construction.

Advantages
  • Almost unlimited life when suitable material of construction chosen
  • Installed in virtually all situations
  • Maintenance free
  • No moving parts
  • Quickly and easily put into operation
  • Relatively low priced
  • Wide range of materials available
Applications
  • Circulation of air in the leather, tobacco and textile industries
  • Deaerating reaction vessels, agitator vessels and other aggregates in chemical factories
  • Drawing off stale air, ill-smelling gases and vapours from working and storage areas
  • Used as forced blast blowers, or stack ventilators for boiler burners
  • Ventilating tanks, e.g. on ships
Range of Operation

    Compression (difference between discharge and suction pressure): up to approximately 500 mbar

Materials
  • Cast iron
  • Cast stainless steel
  • Other materials on request
  • Steel or stainless steel
  • Temperature change resistant porcelain

An example for the deaeration of reaction vessels with a low-pressure gas jet ventilator. Air
is fed into the gas jet ventilator as motive medium by a blower with low compression.

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