Air Filter Regulator Unit (FR Unit)

An Air Filter Regulator Unit is used to treat the air in compressed air systems. Treating air is necessary because air supplied by compressors is tainted with dirt, oil, or water, at the incorrect pressure, and un-lubricated for your pneumatic tools or equipment. If treated improperly, it can be harmful to equipment and reduces their lifespan, and decreases performance. Proper selection of air treatment units, on the other hand, will ensure smooth performing equipment with increased reliability and lifespan.

A regulator is used to control the speed and precision of the flow of liquids and air, whereas the filter cleans the air that travels from the compressor. The airline filter scrubs, strains, and traps solid particles (dust, dirt, rust), and separates liquids (water, oil) within 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.