... investment, requires hard maintenance and discharges lot of waste liquid. DF filter is the ideal solution for ... Applicable Industries and Liquids Applibable industriesWater treatment, pulp and paper, petro-chemical,bio-pharmaceutical, coatings, inks, oil refinary ... , automatic continuouslyonline filtrationMain Specification Sub-seriesA series, X series, M seriesModelsA7, A22, A41, A71, A123, X11, X22, ...