Patent ID: 7040513

Claim:
A metering valve for dispensing a fluid, said metering valve comprising a valve body ( 10 ) and a valve member ( 20 ) mounted to slide relative to said valve body ( 10 ) between a rest position and a dispensing position, said valve further comprising a metering chamber ( 11 ) serving to contain the metered quantity of fluid discharged each time the valve is actuated, wherein, when said metering valve is in the rest position, said metering chamber ( 11 ) is at atmospheric pressure; and wherein the valve further comprises a filling chamber connected firstly to a fluid reservoir and secondly to said metering chamber, a passageway between the metering chamber and the filling chamber being closed when the valve is in the rest position and in the dispensing position, said passageway being open when the valve moves between the rest position and the dispensing position.