Patent ID: 7854328

Claim:
A filter cartridge for a reversible flow filter for filtering a fluid, comprising a filter cartridge interior which is surrounded by a filtering medium, and a reverse flow damming body which is arranged in the interior of the filter cartridge and is moveable in a longitudinal direction of the filter cartridge by the reverse flow when back flushing the filter cartridge and produces a local increase in the dynamic pressure of the reverse flow, wherein the reverse flow damming body does not abut against the filtering medium when back flushing the filter cartridge, wherein the filter cartridge comprises a reverse flow damming body seating for the reverse flow damming body, in which said seating the reverse flow damming body is accommodated during the filtration phase of the filter cartridge, wherein the reverse flow damming body seating comprises at least one fluid channel for directing the filtered fluid past the reverse flow damming body and at least one projection pointing into the interior of the reverse flow damming body seating.