Modern production methods place ever higher demands on compressed air quality. The compressor draws in ambient air, which is heavily enriched with pollutants, and compresses it. Depending on the compressor type, the air also contains oil, which is transported with the compressed air in fine aerosol form, as well as impurities from the compressed air network such as rust, scale and lime deposits. The task of a compressed air filter is to remove these impurities and thus prevent damage to downstream equipment. In addition, any condensate produced must be drained from the compressed air network.