Device for complete desalination of water

An apparatus for the desalination of water comprising:

• a cylindrical pressure-resistant vessel having means at the ends thereof for connection to a pressurized water line;
• a disposable cylindrical cartridge having peripheral walls formed of water impermeable, non-pressure resistant material positioned within said vessel so that the peripheral walls of said cartridge are in close proximity to or abutting the inside of said vessel,
• a mixed bed of cationic and anionic exchange resins in said cartridge,
• removable cover means at one end of said vessel,
• water inlet and outlet means at the axial ends of said cartridge so that said cartridge is positioned in said vessel in such a way that water passing through said vessel will pass through said cartridge,
• first sealing means near the end of said cartridge adjacent said water inlet means for establishing a water-pressure-tight seal between the wall of said cartridge and said vessel,
• said cartridge including a clamping ring threadedly attached to the upper portion of said cartridge and an inwardly directed chamfer adjacent said clamp ring,
• said first sealing means including a circumferential gasket abutting said chamfer and urged into contact with said vessel by means of said clamp ring
• whereby the pressure of water passing through said cartridge is transferred through the non-pressure resistant walls of said cartridge to the pressure resistant walls of said vessel without damage to the walls of said cartridge.