COMPRESSED AIR EQUIPMENT 1300 446 944

Compressed air is a valuable source of power and benefits from being clean and free from impurities. Inline air compressor filters prevent oil and particulates from passing through compressed air tools into your system. Extend the longevity of your compressed air system and save on power usage costs with a new inline compressed air filter.

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Frequently Asked Questions

Air compressor filters play a vital role in the compressed air process because even from a new installation, compressed air is heavily contaminated.

For your air compressor products to work efficiently, the air must be clean and free of these contaminants. Specific application uses and industries with strict purity standards may also require contaminants to be removed, making air filters necessary.

Inline air compressor filters prevent oil and particulates from passing through compressed air tools into your system. Dirt, dust or loose metal particles from pipe corrosion can affect quality control, production lines and the satisfaction of customers.

Depending on the sensitivity of your application and process, you may need an inline air compressor filter. Choosing the right inline air compressor air filter for your application is essential in eliminating damage to the final product. For your chosen inline compressed air filter to be effective, place anywhere in the piping system.

The most common placements include:

  • Directly after the air compressor.
  • Before and after the compressed air dryer.
  • Prior to point of use (on each compressed air drop).
  • Specific to your system’s needs.

Dry Particulate Filters 

Dry particulate air compressor filters are needed to remove desiccant particles after an adsorption air dryer. They are used to remove dust and particles to prevent clogs, filtering through membrane material. This membrane acts as a gate only allowing air to pass through, whilst anything bigger gets blocked.

Coalescing Filters 

Coalescing air compressor filters capture oil, aerosols, tiny moisture droplets to prevent condensation in the system, essential for eliminating rust. The separation is a two-phase process. Smaller droplets are merged with larger ones to be removed from the filter. A re-entrainment barrier prevents droplets from re-entering the air.

Vapour Removal Filters 

Vapour removal air compressor filters remove gaseous lubricants that go through the coalescing filter. These air compressor air filters cannot be used to capture lubricant aerosols, as they saturate the filter and render it useless within hours. To avoid this damage, a coalescing filter should be used to send air through first. The adsorption process of vapour removal filters uses activated charcoal as the filtering medium.

0.01-Micron

A 0.01-micron air filter can separate residual oil and extremely small particles down to 0.01-micron. It produces air which is free from oil. Is used for the protection of a control system, pneumatics haulage, painting systems or as a post-filter for adsorption dryers.

1-Micron

A 1-micron filter is capable of separating particles such as liquid and oil down to 1 micron. It is normally used on air dryers as a pre-filter. 1-micron filters can prevent the deterioration of your air compressor piping, for surface treatment, on vacuum pump exhausts, on compressed air motors, and as pre-filter for air dryers.

This is dependent on multiple factors, but the industry standard rule is once a year, or every 8000 hours of operation. Some variables that may affect this include:

  • Improperly sized filtration.
  • High oil carryover from compressor equipment, which leads to quicker filter saturation. View our range of oil free air compressors.
  • Increased particulates due to pipe or equipment corrosion.

Inline compressed air filters from Express Compressors will not only improve the quality of your machine, but also aid energy efficiency, thus saving on power usage.

Extend the longevity of your air compressor or refrigerant air dryer by using the best quality air compressor air filters. We can also help with installation and maintenance. Talk to our team of compressed air experts who can advise on which type of inline air filter will work best for your compressed air product.


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