Mixing cartridge

A mixing cartridge, comprising:

• a cartridge body;
• an actuation lever;
• a fixed plate provided at least in part within the cartridge body, the fixed plate comprising input openings for the separate inflow of hot and cold water and an output opening for the outflow of mixed water;
• and
• a movable element comprising a movable plate provided within the cartridge body and coupled to the actuation lever to be moved on or with respect to the fixed plate by acting on the actuation lever, said movable plate internally defining a mixing chamber open towards said fixed plate and which selectively communicates or blocks the communication of said input openings, in part or completely, with said output opening;
• wherein:
• the mixing cartridge comprises a flow rate limiting arrangement placed within the cartridge body in the path followed by the water flow between said inflows and said outflow, so that the flow rate of said water is limited;
• said flow rate limiting arrangement comprises a permeable barrier having a permeability distribution selected and predetermined to affect at least portions of said water flow so that a required limited water flow rate is provided thereto;
• said permeable barrier comprises a wall having a plurality of through holes providing said permeability to the barrier, and distributed according to at least one holes distribution pattern defined in a region of the wall and interposed in at least one of said inflows of hot and cold water, so that the flow rate thereof is limited when passing through said holes;
• said wall is placed outside the mixing chamber and is integral with the fixed plate;
• and
• said plurality of through holes traverse the whole thickness of the wall up to a sealing contact area between the fixed plate and the movable plate, so that at least one of said input openings is constituted by said through holes.