Automatically operating valve for regulating water flow and faucet provided with said valve

A faucet comprising

• (a) a faucet body having a proximal end adapted to receive liquid supply means, a distal end having a tap opening for liquid discharge and a water outflow passage communicating between said proximal end and said distal end,
• (b) a power-operated mixing and flow regulating valve, said valve being mounted on the proximal end of said faucet body, said valve being provided with an inflow passage to which a cold water supply pipe and a hot wate supply pipe are connected, said inflow passage communicating between said supply pipes and said water outflow passage by way of a pair of respective valve openings, opening degree of said valve openings being regulated by the reciprocation of a pair of respective valve elements,
• (c) a pair of piezoelectric actuators, each independently and operably connected with a respective one of said valves, and
• (d) a control device comprising a printed circuit disposed in said faucet body, said control device controlling the operation of said valve so as to effect automatic temperature control and flow rate control of mixed cold and hot water passing through said water outflow passage.