Compressed Air Dryers

What is a Compressed Air Dryer?

A compressed air dryer is a filter system which works to remove water vapour from compressed air.

Water formation is unavoidable in air compressors as the process of compressing air raises the temperature, effectively causing water vapour to form.

It’s essential that this water is removed as it may cause several ill effects, such as:

  •   Erosion in the compressor tank and piping
  • •  Strip essential lubricating oils from pneumatic tools
  • •  Mix with the lubricant used in cylinders
  • •  Cause damage to pneumatic machinery, air motors or valves

It’s crucial that you select the correct type of air dryer for your specific requirements.

What Are the Different Types of Compressed Air Dryers?


Refrigerated Air Dryers

Refrigerated compressed air dryers can be either cycling or non-cycling. Cycling dyers increase or decrease cooling capacity according to use. Non-cycling is the most common type because it’s highly reliable and has the lowest maintenance costs.

Desiccant Air Dryers

Desiccant compressed air dryers, also known as regenerative dryers, move compressed air through moisture absorbing ‘desiccant’ materials. These dryers have two compartments, one to dry out the compressed air as the other is filling with desiccant to regenerate. The regeneration process can be achieved through compressed air, heat, vacuum or a combination of these technologies.

Membrane Air Dryers

Membrane compressed air dryers remove both contaminants and water vapour through a filtration system. Humid compressed air is passed through hollow fibres made from membranes specifically designed to attract water vapour. Unlike refrigerant air dryers, these machines do not use refrigerating agents.

It’s vital that you assess the needs your air dryer as selection will largely depend on the precise air quality requirements and the moisture tolerance level of the machinery.

For example, most air compressors in the manufacturing or industrial productions will use a refrigerated air dryer, while machinery used in industries such as medicine or spray painting will use desiccant dryers ensure the air is clinically dry and clean.

Here at Express Compressors Australia we pride ourselves on customer experience and take the time to understand your business needs so we can supply the best compressed air machinery for you.

Call the Express Compressors team on 1300 446 944 or contact us today to talk to one of our professional staff. Let us help you achieve maximum efficiency for your business.

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