Abstract: An elongate mesh pack for filtering a fluid defines a mesh pack axial opening. The mesh pack comprises a filter medium for filtration of the fluid and has an end fitting securely fixed to the filter medium, the end fitting providing a first extremity of the mesh pack. The end fitting has an inner surface defining an end fitting opening through the end fitting, the end fitting opening being co-axial with the axial opening of the mesh pack. The end fitting comprises an annular recess encompassing the end fitting opening. A partition wall suitable to deform towards the recess under radial force is provided between the recess and the end fitting opening, the partition wall forming at least part of the inner surface.

Abstract: Cross flow filter device comprising a longitudinal first filter element (1) having a first width (w1) and a longitudinal central axis (8), a longitudinal second filter element (2) having a second width (w2) and being longitudinally installed substantially concentrically inside said first filter element (1), a housing (3) surrounding said first filter element (1), said cross flow filter device having respectively a raw material inlet (4), a concentrate outlet (5), and a first filtrate outlet (6) connected to said first filter element (1). The ratio between the second width (w2) and the first width (w1) is 65%, preferably at least 70% and more preferably about 75%.