11
Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes.
apparatus for the chemical and mechanical treatment and conditioning of drinking water, namely, filters and filtering machines, pumps, valves, dosing pumps, portioning units; desalination plants, comprised of anion and cation converters; reversed osmosis units, comprised of membranes and pumps; apparatus for detecting and measuring materials dissolved in water, namely, sensors; control apparatus, namely, monitors, valves, flow-meters, regulators, and sensors for controlling the operation of water-conditioning apparatus and plants; apparatus for the treatment of heating water, namely, filters; safety fittings, namely, pressure reducers, pressure-relief valves; waterstops for domestic water supply systems