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5 Types of Compressed Air Line Filters For Your System

5 Types of Compressed Air Line Filters For Your System

Compressed air line filters play a vital role in keeping your systems running. They protect your pneumatic equipment from dust, dirt, water, oil, and other pollutants which can cause damage as well as unsafe air. That’s why it’s important to invest in the proper filters to ensure a trouble-free operation of your equipment and overall bottom line.

However, with varying types of compressed air line filters available in the market, you may find it tricky to choose the right one that would fit your air compressor system. You should also know that there are distinct purity requirements for different compressed air applications. To guide you, here are the 5 types of compressed air line filters for your system.


5 Different Types of Compressed Air Filter and Their Importance in Your System


1. Compressor Intake Filter

This particular type of compressed air filter often acts as the first stage of filtration in any pneumatic equipment. As such, the efficiency of your systems heavily relies on the intake filter.

It treats the air before going into your machinery to ensure the said equipment stays clean and maintains its operating power. It also helps in keeping your air compressors and blowers running more quietly and efficiently.


2. Coalescing Filter

Coalescing filter is utilized for purifying water and aerosols in your systems. It can also treat particulates from air compressors which can lead to pressure drops if not changed regularly. 

This type of compressed air filter works by catching small droplets in a strainer media which allows it to merge with larger droplets. These contaminants are then easily taken out of the filter and are restricted from re-entering the air by a special barrier. It can successfully remove most contaminants and reduce liquid levels down to 0.01 ppm and particulate levels to 0.1 micron in size.

Tip: While it’s effective in water and aerosol filtration, a coalescing filter often comes at a steep price. For a low-cost and cheaper alternative, try a mist eliminator. It may not have the same accuracy and level of filtration as coalescing filters but they offer comparatively smaller drops in pressure. This allows you to operate systems at lower pressure levels, thus saving on energy costs.


3. Vapor Removal Filter

Coalescing filter usually leaves behind vapors, gaseous lubricants, and other airborne chemicals after the refining process.

To remove such contaminants from damaging your air compressor systems, it’s a must to invest in vapor removal filters. This type of compressed air line filter is usually considered the third stage of filtration after the coalescing filter.

It utilizes carbon granules and carbon cloths to capture contaminants and effectively eliminate them. Also known as charcoal compressed air filter, it may even use activated charcoal—which has a large open structure—for easy filtration of particulates.


4. Dry Particulate Filter

As the name suggests, a dry particulate filter treats your systems of dirt and other desiccant contaminants. Aside from this, it can also be utilized to filter any corrosion particles that come from the air compressor. 

A dry particulate filter utilizes different methods to clean the air. However, it usually operates in a similar manner as a coalescing filter—by trapping the sifting remaining particles using a filter media.

Tip: Once the dry particular filter is filled with dust and other particulates, the pressure drop in the air compressor grows and the amount of the contaminants that bypass the filter also increases. That’s why it’s vital to replace this type of compressed air filter regularly to ensure a proper and effective purification process.


5. Activated Carbon Filter

Activated carbon filters are useful in removing oil odors and vapors found in your system. They are mostly utilized in the food and medicine industry where clean air is essential for the safety of delicate products.

However, this type of compressed air filter doesn’t have the ability to treat solid and liquid contaminants. In fact, air compressors should be free of both solid and liquid contaminants before passing through an activated carbon filter.


Dust, dirt, oil, vapor, and water can wear down your pneumatic equipment and severely affect bottom line processes. To prevent such from happening, it’s important to invest in compressed air filters for your system. However, you also need to consider the different applications required by your machinery for effective filtration.


ALSO READ: 3 Reasons to Use Filtered Air in Food Grade Compressors


Want to ensure your air compressors are in optimal shape? Compresstech Resources Inc., one of the leading air compressor suppliers in the Philippines, offers a range of cost-efficient air treatment solutions from top industry brands like Armstrong-Risheng, Angstrom, CoAire-Kyungwon, Bekomat, Owamat, and Drypoint. Contact us today to learn more!

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