The principle is simple, they trap and collect particles to purify the airflow. Though it may vary slightly depending on the type of air filter you have, whether that be coalescing filters, particulate filters, or water vapor filters.

　　Compressed air filters stop water, oil, and dirt from reaching your pneumatic devices, making them an essential component for the overall health of your air compressor system. You don’t want these contaminants reaching your equipment if it has the potential to damage or even destroy them!

　　To actually describe how the air filter works, it’s best I introduce to you the different components and the part they play in the contaminant removing process.