Apparatus for lighting, heating, refrigerating, drying, ventilating, water supply and sanitary purposes, including for kitchens, namely water purification and filtration apparatus, faucets, water heater; sanitary fittings, fittings for water supply, water heating, bath, shower, washing, dish-washing, bidet and toilet installations and for the water intake and drainage of such installations, the aforesaid fittings including digital and touch-controlled, namely valves, faucets, mixer faucets fo...