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Air Operated Double Diaphragm pumps from the worlds largest manufacturers.

Air-Operated Double-Diaphragm pumps are a type of positive displacement pump which consists of two pumping chambers that are alternately filled and discharged by the movement of flexible diaphragms. Compressed air is alternately fed to, and vented from, air chambers on the opposite sides of the diaphragms to create the pumping action.     


Advantages of AODD Pumps

  • Are able to run dry for a period of time without damaging costly internal parts.
  • Easy to use with a simple design.  
  • Versatility and the ability to handle a range of viscosities.

Typical applications for AODD pumps

AODD pumps are typically utilised for transfer applications and have the ability to handle a range of material such as sludges, slurries, abrasive and shear sensitive fluids. Although they are robust, reliable and easy to maintain they tend to be relatively noisy, prone to icing, and are limited to low pressure applications.


AxFlow is one of the leading UK suppliers of AODD pumps with over 50 years of experience. AxFlow UK has a wide range of Air Operated Double Diaphragm pumps from Wilden and Almatec.

Air Operated double diaphragm pumps are widely used for their simple, portable construction and their ability to dry prime, and handle solids.

Air Operated Diaphragm pumps are employed in a host of fluid transfer applications ranging from circulation duties in cleanroom environments to sludge pumping. AOD Pumps are intrinsically safe by design, offering a wide range of material and elastomer options. 

How AODD pumps work

How to select AODD pumps

How to maintain AODD pumps

AODD pump fault diagnosis

16 series from 2 manufacturers

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