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Pneumatic Conveying - Pressure Conveying

Supplier: Fresco Systems Australasia

Pneumatic Conveying simplifies the transportation of a vast array of materials from one or more pick-up points to a destination or multiple destinations from only a few meters up to hundreds of metres apart.


The versatility of conveying vertically and horizontally enables the conveying tube to be run in a route that avoids many obstacles in a production facility. Long radius bends reduce wear and pressure loss within a system although Tee bends are sometimes used on fragile or very abrasive products.

The two most common forms of pneumatic conveying are Vacuum Conveying and Pressure Conveying. The selections of which type of conveying system is to be used and on whether the system is Lean Phase or Dense Phase, is determined by various factors such as product, distance, cost, conveying rate etc.

Positive conveying uses a blower to blow product metered into the conveying line from a material source to a destination or multiple destinations up to 300m away and at rates up to 30tph.

In the Lean Phase pressure conveying mode, product is separated from the conveying air by either a cyclone receiver, stand alone filter or a filter fitted to the receiving vessel before the clean air is released to the atmosphere.

As the air has been compressed prior to mixing with the product, heat generated from the compression can result in an increase in product temperature.

Pressure conveying is ideally suited to the conveying of materials to various destinations such as weigh hoppers in a ring main system with the excess product and conveying air returning to the material source.

Options for Pneumatic Conveying - Pressure Conveying:

There are many options available to enhance your pneumatic conveying needs.

  • Dust collection
  • Filter socks or cartridges
  • Level sensors
  • Load cells
  • Fluidisers
  • Vibrators
  • Butterfly valves/rotary valves