This patented line of compressed air filters are generally for placement at point of use and can also be used for heavy-duty service, where heavy water, dirt and oil removal is needed. These oil and water separators are usually used in combination with a coalescer to achieve higher efficiency filtration (to .01 micron), which will eliminate any carbon migration that may occur in compressed air systems. Remove water, dirt, oil and odor down to 0.003 ppm. Our four stage oil extractor filters use an activated carbon filter backed by a cotton/polyester packing. This combination of filter elements provides excellent water, dirt, and oil aerosol capture.