| 摘要 |
The invention relates to a metering valve (1) for dispensing an aerosol comprising a metering chamber (10) and a valve stem (13). The valve stem (13) is equipped with one end disposed on the side of a container and a dispensing end (12) mounted in the metering chamber (10) such that it can slide under the force of a spring (11) between a first high position known as the rest position and a second position known as the intermediate position for filing the metering chamber. The metering chamber comprises an upper cylindrical compartment (50) and a lower cylindrical compartment (51) the diameter of the upper compartment being greater than that of the lower compartment. |
