Liquid treatment cartridge, set of such cartridges and method of manufacturing it

A liquid treatment cartridge including a housing, in which a liquid treatment part is arranged, the housing including a housing part forming an axial end of the housing and including a connecting head at the axial end of the housing,

• wherein the liquid treatment part comprises at least one component for treating a liquid,
• wherein the connecting head includes at least one liquid port and is configured for insertion into a cavity of a head part of a liquid treatment system such that the liquid port(s) of the connecting head are in sealed liquid communication with respective liquid ports in the head part,
• wherein the connecting head is insertable in axial direction into a cavity of a receiving part of the head part movably journalled with respect to a housing of the head part, and
• wherein the connecting head includes at least one alignment part for axially aligning the receiving part with the liquid treatment cartridge during insertion of the connecting head into the cavity,
• the alignment part being provided on an external surface of the connecting head for insertion into a groove of the receiving part when the connecting head is inserted into the cavity,
• wherein the alignment parts for insertion into the groove of the receiving part are arranged to contact the groove at multiple axial locations simultaneously.

A set of liquid treatment cartridges, each including:

• a housing, the housing including a housing part forming an axial end of the housing and including a connecting head at the axial end of the housing,
• wherein the connecting head includes at least three liquid ports, each at an end of a respective channel defined by the housing part,
• wherein the connecting head is configured for insertion into a cavity of a head part of a liquid treatment system such that the liquid ports of the connecting head are in sealed liquid communication with respective liquid ports in the head part;
• a liquid treatment part arranged in the housing, wherein the liquid treatment part comprises at least one component for treating a liquid;
• and
• at least one separate flow conductor part on the inside of the housing, attached to the housing part and including at least one conduit for conducting liquid so as to separate interior ends of at least two of the channels from those of at least one other of the channels,
• wherein at least bodies of the housing parts forming the axial ends of the housings of the respective liquid treatment cartridges are essentially identical in shape and dimensions, and
• wherein flow conductor parts of at least two of the liquid treatment cartridges separate interior ends of at least four channels differently.

A method of manufacturing at least one of range of liquid treatment cartridges, each including a housing, the housing including a housing part forming an axial end of the housing and including a connecting head at the axial end of the housing,

• wherein the connecting head includes at least three liquid ports, each at an end of a respective channel defined by the housing part,
• wherein the connecting head is configured for insertion into a cavity of a head part of a liquid treatment system such that the liquid ports of the connecting head are in sealed liquid communication with respective liquid ports in the head part;
• a liquid treatment part arranged in the housing, wherein the liquid treatment part comprises at least one component for treating a liquid;
• and
• at least one separate flow conductor part on the inside of the housing, attached to the housing part and including at least one conduit for conducting liquid so as to separate interior ends of at least two of the channels from those at least one other of the channels,
• the method including selecting and attaching to the housing part one of a number of different sets of at least one flow conductor part to configure the liquid treatment cartridge.