A thermostatic mixing valve having: proportioning valve means (7;107) for controlling mixing of hot and cold water according to user selection of the outlet water temperature, wherein the proportioning valve means comprises a shuttle valve having a valve member (8;108) movable between hot and cold seats (9,10;109,110) to set the user selected outlet water temperature; a manually operable actuator (47;147) for user selection of water temperature and flow rate, wherein, the actuator (47;147) is operatively connected to the valve member (8;108) for controlling axial movement of the valve member (8;108) between the hot and cold seats (9,10;109,110); wherein the hot and cold seats (9,10;109,110) are relatively movable for controlling water flow rate according to user selection and to sandwich the valve member (8;108) therebetween to shut-off water flow, wherein one of the seats (9;109) is fixed and the other seat (10;110) is movable towards and away from the fixed seat (9;109) to set the user selected flow rate, and the actuator (47;147) is operatively connected to the movable seat (10;110) by flow coupling means for converting one of pivotal and axial movement of the actuator (47;147) into axial movement of the movable seat (10;110) to set the user selected outlet water flow rate, and the actuator (47,147) is coupled to the valve member (8;108) by temperature coupling means for converting the other of pivotal and rotational movement of the actuator (47;147) into axial movement of the valve member (8;108) to set the user selected outlet water temperature; and wherein the temperature coupling means and flow coupling means are configured to permit adjustment of water temperature and flow rate independently of each other by either rotational movement or pivotal movement of the actuator and to permit adjustment of water temperature and flow rate simultaneously by a combination of rotational and pivotal movement of the actuator. proportioning valve means (7;107) for controlling mixing of hot and cold water according to user selection of the outlet water temperature, wherein the proportioning valve means comprises a shuttle valve having a valve member (8;108) movable between hot and cold seats (9,10;109,110) to set the user selected outlet water temperature; a manually operable actuator (47;147) for user selection of water temperature and flow rate, wherein, the actuator (47;147) is operatively connected to the valve member (8;108) for controlling axial movement of the valve member (8;108) between the hot and cold seats (9,10;109,110); wherein the hot and cold seats (9,10;109,110) are relatively movable for controlling water flow rate according to user selection and to sandwich the valve member (8;108) therebetween to shut-off water flow, wherein one of the seats (9;109) is fixed and the other seat (10;110) is movable towards and away from the fixed seat (9;109) to set the user selected flow rate, and the actuator (47;147) is operatively connected to the movable seat (10;110) by flow coupling means for converting one of pivotal and axial movement of the actuator (47;147) into axial movement of the movable seat (10;110) to set the user selected outlet water flow rate, and the actuator (47,147) is coupled to the valve member (8;108) by temperature coupling means for converting the other of pivotal and rotational movement of the actuator (47;147) into axial movement of the valve member (8;108) to set the user selected outlet water temperature; and wherein the temperature coupling means and flow coupling means are configured to permit adjustment of water temperature and flow rate independently of each other by either rotational movement or pivotal movement of the actuator and to permit adjustment of water temperature and flow rate simultaneously by a combination of rotational and pivotal movement of the actuator.