Inline Compressed Air Filters

Filters play a vital role in the compressed air process because even from a new installation, compressed air is heavily contaminated. For your air 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 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 filter. Choosing the right inline 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 air dryer.
  • Prior to point of use (on each compressed air drop).
  • Specific to your system’s needs.

What are the Different Types of Air Filters?

Dry particulate filters are needed to remove desiccant particles after an adsorption 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 though, whilst anything bigger gets blocked.

Coalescing 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.

Vapor removal filters remove gaseous lubricants that go through the coalescing filter. These 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 vapor removal filters uses activated charcoal as the filtering medium.

How Often do Inline Air Filters Need to be Changed?

This is dependent on multiple factors but the industry standard rule is one 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 oil free range of air compressors.
  • Increased particulates due to pipe or equipment corrosion.

Inline Air Filter Products at Express Compressors

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 inline 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 filter will work best for your compressed air product.

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