Filter for air extraction system with housing contg. filter material

摘要

Air extraction system includes a filter with a housing (8) having several air inlet orifices (8a) spaced over its periphery. Pref. an inlet connection piece (9) with several air inlet orifices (9a) of equal cross section is provided, projecting into the filter housing with an external projection attached to an air extractor, being closed at its opposite end. Ensures complete utilisation of filter material