Filter cartridge

A fluid filtration assembly extends along a main axis and comprises a bowl body and a head body, wherein the bowl body and the head body respectively comprise, circumferentially, a first collar and a second collar shaped to mutually engage by a reciprocal action of roto-translation;

• wherein said bowl body has a filtration chamber accessible through an access mouth peripherally delimited by the first collar;
• wherein the head body has in the second collar at least one slot facing inwards and parallel to the main axis laterally delimited by slot edges having an axial extension;
• wherein the first collar of the bowl body comprises a passive blocking member extending radially outward and forming a radially outward facing cavity;
• wherein the fluid filtration assembly further comprises a filter cartridge extending around a cartridge axis and comprises:
• i) a filter medium housed in the filtration chamber;
• ii) an end plate located at an axial end of the filter medium and engaging the first collar comprising:
• an active blocking member blocking the filter cartridge to the bowl body to comprise a single filtration group, wherein the active blocking member comprises at least one blocking tooth to snap-engage the passive blocking member outward facing cavity during insertion in an axial direction of the filter cartridge into the bowl body, said blocking tooth comprising a stem extending from the end plate in an axial direction toward the bowl body substantially parallel to the cartridge axis, and an attachment portion extending from an axial end of the stem in a radially inward direction transverse to the cartridge axis, the attachment portion defining an undercut with the stem configured to attach the active blocking member to the passive blocking member;
• at least one anti-rotation element extending in a radial direction from the end plate to be housed in the slot of the second collar by performing on the slot edges a circumferential abutment action opposing mutual rotation between the filtration group and the head body;
• wherein the anti-rotation element integrally extends from the end plate, extending in a radial direction in a tapered shape to facilitate housing of the anti-rotation element in said slot, during relative rotation between the filtration group and the head body;
• wherein the anti-rotation element comprises a surface for clockwise sliding and a surface for anti-clockwise sliding configured to engage said slot edges;
• wherein said surface for clockwise sliding has a first inclination relative to the cartridge axis, and said surface for anti-clockwise sliding has a second inclination relative to the cartridge axis, said second inclination being different from said first inclination.