The reverse osmosis device can be considered the most efficient water treatment option available on the market. The WS140 device is designed for industrial dishwashers: it is compact, has an hourly capacity of 120 l/h and also features external profiteering. It is extremely effective in eliminating chlorine, impurities and mineral salts contained in inlet water. Its reduced footprint facilitates also horizontal installation. Very simple, cost-effective ordinary maintenance.