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Inline Compressed Air Filters

Naili's inline compressed air filters can help capture dirt particles and other impurities that can prevent air compressors from operating at peak performance. Compressed air filters also remove moisture, help provide better compressor airflow and increase the air pressure for car painting and mechanical maintenance work. Count on Grainer for a high-quality compressed air filter for your air compressor.

Contact us if you need help choosing the best airline filter for your air compressor system.


Air filters are installed in the supply lines of compressed air systems to remove water, dirt, oil, and other contaminants from the air. They improve the performance of downstream components and equipment and prevent damage and corrosion. Naili compressed air filters are modular systems consisting of filters, regulators, and lubricators. Naili treats compressed air before sending it to downstream equipment or point of use. The main line compressed air filter is installed on the primary air supply line after the air compressor. Miniature compressed air filters are compact, lightweight, and can be mounted directly on air tools. Disposable compressed air filters can be discarded when they need to be replaced, reducing maintenance and cleaning. Sterile compressed air filters have high filtration efficiency ratings to remove contaminants including live organisms such as bacteria and mold.

How do air filters work?

Compressed air systems require clean air to function properly and provide air for applications that do not damage machinery. A properly functioning air filter consists of a pre-filter and a post-filter:

Pre-filters: These filters capture and filter moist, dirty air entering the air dryer.

After Filters: These filters filter the drying air as it leaves the dryer.

Particulate filters capture debris, oil, and other gross contaminants. The air then enters the coalescing filter to remove fine impurities such as water or aerosols. After the air leaves the dryer, it passes through another particulate filter to ensure the air is completely clean.

Why do you need an air filter?

You cannot make coffee without a filter. Similar to coffee machines, compressed air systems also require filters to function.

Why an Industrial or Manufacturing Facility Needs Air Filters

Compressed air is full of aerosols, particles, and oil vapors that contaminate the air and can cause injury to end-users of items that use compressed air.

By using the right in-line filter, you can help eliminate unwanted particles, vapors, and aerosols. The type and number of air filters required depend on the air quality you need.

The benefits of air filters

Air filters can provide many benefits to any industrial facility. In a commercial setting, air filters can provide the following benefits:

Improve product quality: If your manufacturing process requires very clean air, filters will provide clean air. Aerosols and oil vapors can damage products such as semiconductors or contaminate pharmaceuticals.

Removal of Airborne Residues: During manufacturing, airborne residues resulting from the process can be potentially hazardous to employees and business activities. Filters remove these filters from the air, making the facility's environment safer.

Protect your tools: Air filters keep your compressed air tools in good working order. Contaminants can damage your tools, leading to over-repair or premature replacement.

An air filter isn't just an enhancement to an industrial facility - it's a necessity. Poor air filtration can cause pipe corrosion and pressure drop, and make your compressors work harder, leading to higher energy costs, unplanned downtime, and expensive repairs. Air filters keep your compressed air system clean and functioning well.

How often should you change your air filter

The simple answer is that when the air filter gets dirty, you should replace it. But what factors influence how often a filter gets dirty and needs to be replaced? When determining how often to replace your air filter, consider the following:

The amount of dust and pollutants in the air

How often the system runs

Do you have other air filters and how well they work

At the very least, checking your air filter should be part of your regular maintenance schedule.


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