Patent AT-E401520-T1: [Translated] MIXING VALVE

The sanitary mixer valve has an adjustable control disc (2) for a fixed valve seat disc (1) which has water passage openings. A central passage (12) is provided in the valve seat disc and an overflow passage (20) is formed in the control disc and selectively brought to overlap with through-passages constructed in circular ring cut-out form. The through-passages (10,11) which are allocated for the feed of hot and cold water are each separated by a land (13), whereby both lands are positioned so that in a center mixing position with a fully open throughflow one side wall (21) of the overflow passage is in contact with a first side wall (130) of the two lands.