Patent ID: 7363943

Claim:
A multi-stage pedal control water supply installation comprising: a tap having a chamber having a water inlet and a water outlet; a control valve inserted into the chamber; the control valve forming an orifice by extending into the chamber and having a first side axially disposed on a first side of a linking unit; the linking unit is connected to the control valve and at least one pedal, the pedal controlling an operation of the control valve through the linking unit; and a flow control unit provided on a first side of the pedal to interfere with the displacement of the pedal thus to control the area of the control valve orifice overlapped between the water inlet and the water outlet, further comprising a temperature control unit, the linking unit is connected to the control valve by means of the temperature control unit; the linking unit further includes a cartridge stem; a locking end is disposed at a center portion of the stem and a first side of the stem is axially provided to the temperature control unit while a second side of the stem is axially disposed on the pedal so that when the pedal is stepped or released, the control valve moves up or down by means of the stem and the temperature control unit, wherein the tap is provided with a coldwater inlet and a hot water inlet; a turntable, a drive member and a return member are disposed on the temperature control unit; the control valve is axially provided on the turntable; a first side of the drive member is fixed below the turntable and, the drive member extends around the perimeter of the turntable before being connected to the pedals; and the turntable rotates as driven by the drive member to further turn around the control valve.