Compressed Air Filters in India: Types & How to Choose the Right One

By Admin | July 14, 2025

Compressed air plays a critical role in most Indian industries, including textiles, pharmaceuticals, automotive, and food processing industries. Equipment performance, product integrity, and general operational efficiency have been directly under the influence of the quality of the compressed air. Compressed air is most often contaminated with undesired dust, oil mist, rust, particles, and water vapour. Compressed air filters are the most necessary part of any compressed air system to certify the cleanliness of air that would be used in applications that are sensitive.

Particulate filters are used to remove dry solid contaminants like sand, dust, dirt, pip, and scale in compressed air. The filters are usually applied in the pre-filtration phase to safeguard the downstream mechanisms such as dryers, regulators, and pneumatic tools. Their efficiency in filtering particles can be as high as 99 percent in particles above 1 micron. Installation of particulate filters is appropriate in general-purpose industrial applications such as automotive, textiles, and basic production.

Coalescing filters are applied for the removal of fine oil aerosols, water mist, and other liquid droplets in the compressed air breath. They act by obliging any small droplets to merge into bigger ones, which can be removed via a drainage valve. These are very efficient filters down to 0.01 microns and can be used in applications that need high-purity air, such as in the manufacture of pharmaceuticals, food processing, and car painting. Coalescing filters are most often installed after the particulate filters.

The oil vapours, aromas, and hydrocarbon gases enter activated carbon filters after obtaining coalescing filters. They retain volatile organic compounds (VOCs) and other gaseous pollutants in a molecular size using absorption. They are essential to such industries as food packaging, printing, and electronics where required compressed air is odor-free and extremely clean. Carbon filters should be put following coalescing filters to prevent early saturation with oil or water.

HEPA and ULPA filters are among the most efficient filters that guarantee ultra-high air purity by trapping particulate matter below one micron, such as bacteria, viruses, and fine dust.