DEVICES, APPARATUS AND INSTALLATIONS FOR THE SUPPLY, THE TREATMENT, THE PURIFICATION, THE FILTERING, THE SOFTENING, THE CHARGING WITH GAS AND THE DEIONIZATION OF WATER, NAMELY, CARTRIDGE FILTRATION UNITS, WATER FILTERS, WATER IONIZERS, WATER SOFTENING UNITS; CHILLING UNITS FOR AUTOMATIC WATER AND BEVERAGE VENDING MACHINES; ELECTRIC BEVERAGE HEATERS FOR AUTOMATIC WATER AND BEVERAGE VENDING MACHINES; WATER REFRIGERATING MACHINES FOR ICE MAKING; WATER AND AIR PURIFYING MACHINES, WATER AND AIR FI...