| 摘要 |
The invention relates to a dispenser (1) for discharging liquid to pasty materials. The dispenser comprises a pump head (2) and a pump chamber (8) which is embodied therein and is provided with a pump chamber wall (20), an inlet valve (26) and a discharge valve (11). The dispenser (1) further comprises a reservoir (3) which contains a storage bag (4) whose volume can be reduced so as to empty the same. In order to obtain an advantageous design regarding vibrations or sudden pressure increases in the material, the pump chamber wall (20) of the pump head (2) is configured in a flexible manner.
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