A filter element has: a carrier element permeable to fluid and having a support surface, the support surface having a surface area increasing contour; and a filter medium deposited onto the support surface of the carrier element forming a filter layer adapted to the surface area increasing contour.

A method of manufacturing a filter element includes: providing a carrier element, which is permeable to fluid, including a support surface having a surface area increasing contour; immersing the carrier element into a suspension of water and ingredients for a filter medium; depositing the filter medium onto the support surface by applying a vacuum suction through the carrier element so as to form a uniform layer of suspended filter medium onto the support surface; stopping the depositing of the filter medium onto the support surface when a thickness of the layer reaches a desired thickness so as to form the filter element; and removing the filter element from the suspension.

A method of manufacturing a filter element includes: providing a carrier element, which is permeable to fluid, including a support surface having a surface area increasing contour; immersing the carrier element into a suspension of water and ingredients for a filter medium; depositing the filter medium onto the support surface by applying a vacuum suction through the carrier element so as to form a uniform layer of suspended filter medium onto the support surface; stopping the depositing of the filter medium onto the support surface when a thickness of the layer reaches a desired thickness so as to form the filter element; and removing the filter element from the suspension.

A filtering component for a filtering unit with backwashing, the filtering component being annular and comprising a filtering medium between an inner edge and an outer edge, and an internal face and an external face on either side of the filtering medium. The filtering component is adapted to be assembled against a first identical filtering component so that their facing respective internal faces define a space that is circumferentially compartmented by contacting respective ribs. One of the inner edge and the outer edge has passages communicating with each of the sectors on the internal face. The external face has a key for pairing the filtering component in a given position with respect to a second identical filtering component, such that the passages of the second identical filtering component are offset with respect to the passages of the filtering component.

A filter comprising a casing and a plurality of filtering elements stacked between a first cover and a second cover, wherein the first cover rests against the casing in a stacking direction of the filtering elements, wherein the filter further comprises a cover backing coupled to the second cover by a return system configured to return the second cover towards the first cover, wherein the cover backing rests against the casing in the stacking direction and the second cover separates a zone of the casing adapted to receive filtered fluid from a zone of the casing adapted to receive fluid to filter.

A filter comprising a casing and a plurality of filtering elements stacked between a first cover and a second cover, wherein the first cover rests against the casing in a stacking direction of the filtering elements, wherein the filter further comprises a cover backing coupled to the second cover by a return system configured to return the second cover towards the first cover, wherein the cover backing rests against the casing in the stacking direction and the second cover separates a zone of the casing adapted to receive filtered fluid from a zone of the casing adapted to receive fluid to filter.

Pleated filtration media, media packs, filter elements, and methods for filtering fluid are provided which contain three dimensional flutes in the media surface, the flutes configured to improve filter performance. In certain embodiments the flutes have defined peaks that reduce masking between adjacent pleats, the flutes have ridges along their length to modify flute cross sectional geometry, and/or the flutes provide for volume asymmetry across the media.

Pleated filtration media, media packs, filter elements, and methods for filtering fluid are provided which contain three dimensional flutes in the media surface, the flutes configured to improve filter performance. In certain embodiments the flutes have defined peaks that reduce masking between adjacent pleats, the flutes have ridges along their length to modify flute cross sectional geometry, and/or the flutes provide for volume asymmetry across the media.

Pleated filtration media, media packs, filter elements, and methods for filtering fluid are provided which contain three dimensional tapered flutes in the media surface, the flutes configured to improve filter performance. In certain embodiments the flutes have defined peaks that reduce masking between adjacent pleats, the flutes have ridges along their length to modify flute cross sectional geometry, and/or the flutes provide for volume asymmetry across the media.

Pleated filtration media, media packs, filter elements, and methods for filtering fluid are provided which contain three dimensional tapered flutes in the media surface, the flutes configured to improve filter performance. In certain embodiments the flutes have defined peaks that reduce masking between adjacent pleats, the flutes have ridges along their length to modify flute cross sectional geometry, and/or the flutes provide for volume asymmetry across the media.