Adaptervorrichtung

摘要

The adaptor device has a sealing element (24) which can be turned or pushed along inside a casing (4). It can be moved by an external annular shell (12), which at least partly encloses the casing. The sealing element can thus be used to close those outlet apertures of the pump which are not needed. At the same time, the sealing element connects the selected outlet aperture to the pump cavity (6) in such a manner that after the insertion of the appropriate compressed air connection, an effective seal is formed. The casing may be open at one end. The shell can be pushed up on this end to close it.