| 摘要 |
A valve for controlling the flow of granules from a first container to a second container, the valve, when in use, attached to the first container, comprising a movable valve member which is biased to a closed position and engagement means for engaging, in use, with a coupling unit attached to the second container, wherein, in use, the relative rotation of the valve to the coupling unit controls the extent to which the valve is opened.
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