Abstract: A percolation filtering system comprises a flow path of the water to be filtered including a filter cartridge seat (4) for removably receiving a filter cartridge (5) so that said flow path extends through said filter cartridge when said filter cartridge is inserted into said seat, characterized in that it comprises recognition means and counter-means of the suitability of said cartridge, respectively on said cartridge and said seat, suitable for reciprocal interaction when the cartridge is inserted in the seat to enable operation of the filtering system following the cartridge's suitability recognition, or to disable it or signal the suitability/unsuitability respectively of the cartridge if the cartridge is recognized/ not recognized respectively by the recognition means.

Abstract: A percolation filtering system comprises a flow path of the water to be filtered including a filter cartridge seat (4) for removably receiving a filter cartridge (5) so that said flow path extends through said filter cartridge when said filter cartridge is inserted into said seat, characterised in that it comprises recognition means and counter-means of the suitability of said cartridge, respectively on said cartridge and said seat, suitable for reciprocal interaction when the cartridge is inserted in the seat to enable operation of the filtering system following the cartridge's suitability recognition, or to disable it or signal the suitability/unsuitability respectively of the cartridge if the cartridge is recognised/not recognised respectively by the recognition means

Abstract: A percolation filter system with a replaceable cartridge comprising means for determining and/or displaying a parameter representative of the residual service life and/or level of depletion of the cartridge in order to inform the user of this parameter with a view to the replacement of the spent cartridge, characterised in that these determination means comprise means for correcting the determination and/or display of this parameter and means for setting the desired correction which may be set at will by the user.