Filter group

A filter group comprising:

• a filter cartridge a tubular filter membrane and at least a support plate fixed to the filter membrane, the filter cartridge having a longitudinal axis, the support plate having at least an elastically yielding tooth configured to yield in a radial direction responsive to an axial compression thereon in a direction parallel to the longitudinal axis, the elastically yielding tooth defining an engaging surface facing towards the support plate, and comprising a flank inclined with respect to a radial plane of the filter cartridge and configured to flex the elastically yielding tooth in a radial direction responsive to a dragging rotation of the filter cartridge around the longitudinal axis,
• a support body having at least a passage hole defined therein for a fluid and at least a respective engaging seating,
• the support body comprising:
• a flange to solidly and sealingly engage with the filter cartridge,
• an appendage extending longitudinally from the flange, wherein an opening is defined in an edge between the flange and the appendage, the opening forming an engaging seating having an abutting surface snap-engage with the elastically yielding tooth of the filter cartridge and associated with the support body such as to delimit a closed volume communicating with the passage hole,
• a disengaging ramp associated with the engaging seating suitable for disengaging the elastically yielding tooth from the abutting surface following a reciprocal rotation between the filter cartridge and the support body about the axis, whereby the inclined flank of the tooth is brought in contact with the disengaging ramp.