Water control unit for pressure reducing at the connection to an external water supply. The pressure regulator with integrated backflow preventer protects the supply facility as well as the user from damages of excessive pressure and at the same time prevents the back flow of the water into the external water supply. The materials are qualified for drinking water. Technical datas: input pressure up to 10bar, flow pressure 1,0bar, static pressure 1,5bar, output 7l/min, connection: plug nipple for water coupling 1/2 inch.