Thermostatically controlled mixer battery

A thermostatically-controlled mixer battery, comprising:

• a housing defining a mixing chamber and having a hot water inlet bore and a cold water inlet bore formed therein leading to said mixing chamber;
• a thermostatic expansion element mounted in said mixing chamber to permit water to flow therearound, said thermostatic expansion element being adjustable within a preselected operating range so as to permit delivery of a mixture of hot and cold water at a desired temperature;
• a control member coupled to, and thermostatically controlled by, said thermostatic expansion element, said control member being displaceable by said expansion element to effect opening and closing of at least one of said hot and cold water inlet bores to said mixing chamber;
• a manually operable valve for regulating the quantity of the incoming hot water and cold water, said valve including a plate control means comprising at least one rotatable quantity control plate mounted in said housing and having bores formed therein, said quantity control plate being rotatable from the exterior of said housing and being so disposed as to travel over, in use, said hot and cold inlet bores such that said inlet bores are selectively alignable with said bores in said control plate, and a temperature control plate mounted in said housing and actuated by said control member and, in turn, said thermostatic expansion element, said temperature control plate being sealingly displaceable relative to said quantity control plate and having bores formed therethrough selectively alignable with said bores in said quantity control plate to allow hot water and cold water to pass therethrough into said mixing chamber.