| 摘要 |
The present invention particularly relates to a metering end-piece fitted on the neck (80) of a flexible container (8) containing a fluid, and intended for transferring at will a dose of the fluid from an upstream space (E1) towards a downstream space (E2), said end-piece including a chamber (100) in which is provided a mobile stopper (2) that is urged into a rest position by default and is actuated upon operation towards an end position. According to the invention, the stopper (2) separates the upstream space (E1) and the downstream space (E2) from each other in the end position and only in this position, and the outlet (6) of the chamber (100) communicates with the upstream space (E1) for any position of the stopper (2) different from the end position. |
