The Hankison E7-48 is a 7-stage filter element from the Hankison brand of compressed air precision filters. It is used to filter liquid water, oil mist, and solid particles ≥1 micron in pipelines, with a residual oil content ≤1 ppm (w/w). It is suitable for pre-filtering or fine filtration in air compressor after-treatment systems (such as after refrigerated or desiccant dryers).