HP DEMI DOUBLE can be used for cleaning all surfaces with an extraordinary effect WITHOUT STAINS, and filling tanks with zero hardness water. After using the softener, it is no longer necessary to dry the surface. These systems protect all pipes, feed pumps, boilers, showers, faucets and ice machines from impurities, corrosion and calcareous deposits. The system is designed for softening, for the total or partial elimination of total hardness and for the prevention of calcareous deposits. HP DEMI DOUBLE uses special high ionic exchange resins, capable of reaching flow rates of 1500 litres/hour. HP DEMI DOUBLE softeners, despite having 5 times higher flow rates than conventional softeners, use between 50 and 70% less water and salt during regeneration. For example, a crew of (4-6 people) with a consumption of 200 m3/year of water at 30°F hardness, will have an annual consumption of only 100 kg of salt. The system works without electricity and is fully automatic.