Electrodeionization is a recently developed technology for the production, without chemicals products using, of ultra pure water, thanks to the combined use of spiral-wound membranes and ion-exchange resins. A continuous electric current source is connected to an anode and a cathode which keeps the resin activated and, thanks to the magnetic field between anode and cathode, improves the water electrolysis and the separation of the dissolved ions. Thanks to this process is possible to produce high purity water (18 MOhms) starting from water which has been already demineralized by a double-pass reverse osmosis system or a double resins bed. The recovery ratio is very high: up to 95% if fed with demi water having 0°f hardness. GENERAL SPECIFICATIONS The models in the EDI Culligan line are designed and made according to the highest standards of quality, safety and silence. The construction materials used and especially those of the parts in contact with the water are all of proven resistance to corrosion and do not give rise to any phenomena of transfer. The EDI has a general electrical panel complete with PLC so it is independently managed. The brine injection system complete with tank and recirculation pump with the front panel complete with flow rate and pressure gauges makes the system complete and compact.