Type EFST filter elements of filtration grade V are mainly designed for separating coarse dust contaminants (dust filtration, dry-type filtration) from compressed air flows, e.g. for eliminating dust from granulate fillings in adsorption dryers or activated carbon absorbers. Larger quantities of liquid drops are also separated (wet filtration). Filtration grade V is therefore used, if increased amounts of solid or liquid coarse contaminants are to be removed from the compressed air flow.

Type EFST filter elements of filtration grade V consist of a pleated filter media compactly located between the two stainless steel cylinders and therefore completely integrated in the filter element.

Thanks to the pleating technology the effective filter surface is increased many times, resulting in a higher dirt collecting capacity and a longer service life. At the same time the flow resistance and therefore differential pressure generated by the filter element are considerably reduced. The media is located in the two stainless steel cylinders. In this way, breaking off completely or in parts of the filter layer used for filtration is impossible. 

All the features mentioned above are a contribution to a filter element which has a long service life (high dirt collecting capacity) combined with economic efficiency (low differential pressure) and maximum operating safety (integrated design).