What is an Air Operated Diaphragm Pump?

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What is an Air Operated Diaphragm Pump?

Are you looking to buy an air operated diaphragm pump online? Before purchasing a pump, it's important you understand how the air operated diaphragm pump works, advantages and in what applications it is suitable. 

How Does a Diaphragm Pump Work?

The air operated diaphragm pump is a positive displacement pump which creates flow by moving air in and out of two chambers. These two chambers sit on either side of the common or central pump shaft. Between them are two diaphragms which flex in two directions. The pump creates suction in one chamber when the diaphragms flex one way while creating subsequent pressure in the other chamber. This leads to one chamber being for suction and the other for discharge.

This design ensures that fluids are pumped in a linear direction from the inlet to outlet, and this is all achieved using compressed air as a power source rather than a generator or mains line.

Advantages of Air Operated Diaphragm Pumps

Air operated diaphragm pumps are reliable and brilliant performers. With no need for an electrical power source, they are a fantastic option for scenarios where there is no available electricity. They are also ideal for environments where an electric spark could cause a fire or explosion. These pumps are largely leak-free, and only leak when the diaphragm is improperly maintained.

The diaphragms themselves undergo far less wear and tear than mechanical pump components, so they tend to last for a long time. There are no internal seals or moving parts, so there is no need for lubrication or cooling unless your transported fluid exceeds manufacturer specifications. Lastly, air operated diaphragm pumps can run indefinitely and can process viscous or abrasive sludges and slurries.

When to Choose an Air Operated Diaphragm Pump?

At Buy Direct, we offer a wide range of leading pump brands, but to help you make the right choice, we recommend considering an air operated diaphragm pump when:

  • Processing corrosive chemicals;
  • Moving slurries during mining;
  • Pumping viscous fluids in the oil and gas sector;
  • Transporting solvents and paper sludge during pulping and paper manufacturing;
  • Moving water during waste treatment or water management;
  • Processing highly abrasive materials such as during ceramics manufacturing.

Air operated diaphragms are great options for most industries, particularly when pressure requirements are below 120psi. If you would like to know more about the best air operated diaphragm pumps available to buy online, peruse our online store or contact us today with any of your questions.