Abstract: A mixing faucet for sanitary installations comprising a sealed housing defining a mixing chamber and a water outlet, a mixing bushing having hot and cold outlet openings disposed radially in axial direction adjacent the mixing chamber and being mounted in the sealed housing, and a multistage pressure balanced control piston being displaceable within the mixing bushing and acting axially from an outside so as to open and close the water outlet. Two segment slides are positioned each between adjacent of three pistons of the control piston, the segments slides alternately opening and closing the outlet openings for the hot and cold water in the mixing busing, the hot and cold outlet openings discharging into the mixing chamber.