Abstract: A mixing valve of the single lever type having a valve housing (1) with a hot water inlet and a cold water inlet. The mixing ratio is determined by two valve plates (8,9) which are rotatable and displaceable relative to one another and which are guided by dogging means (14, 15, 19). A stop means (30), which can be locked relative to the dogging means, is arranged to co-act with an abutment means, which can be fixedly mounted relative to the dogging means, so as to restrict rotation of the dogging means towards a position in which the ratio of hot water and cold water fed to the mixing chamber increases, to a desired value.