Back flushing liquid filter with a connection coupling

摘要

A filter has a coupling (13) which allows sealed connection of an internal fluid line (11) to an external connection line (12) even if transverse misalignment exists. A filter has a housing with a fluid line (especially a back flushing conduit) which is positioned at one end of an inserted cylindrical filter unit and which, when the filter unit is fitted, is hermetically connected by a plug connector to an external connection line fixed to the housing. The novelty is that the connection region is provided with a coupling (13) which hermetically connects the fluid line (11) and the connection line (12) even on misalignment transverse to the filter unit longitudinal axis.