Arrangement for feeding installation elements through openings in building walls and ceilings, has inner wall element with connection arrangements for installation pipes in end regions

摘要

The arrangement has at least one outer casing element (2), at least one inner wall element (3) and at least one inflating pressure medium element (4) between them. The inner wall element is designed to be deformable by the inflating pressure medium in the event of fire to seal its internal cross-section. At least one sealing element (13) seals the passageway through the device. The inner wall element is provided with connection arrangements (7) for installation pipes (8) in its end regions.