* An airline filter cleans compressed air. It strains the air, traps solid particles (dust, dirt, rust), and separates liquids (water, oil) entrained in the compressed air. Filters are installed in the airline upstream of regulators, lubricators, directional control valves, and air-driven devices such as cylinders and air motors.
* Because airline filters remove contaminants from pneumatic systems, they prevent damage to equipment and reduce production losses due to contaminant-related downtime. Downtime is expensive, and it is often the result of a contaminated and poorly maintained compressed air system.
* Selecting the proper filter size for any application should be done by determining the maximum allowable pressure drop, which the filter can cause. The pressure drop can be determined by referring to flow curves provided by the manufacturer.