| 摘要 |
A device including a valving mechanism which can be operated by one hand. The device includes a housing which surrounds a resilient block of material. The housing may be squeezed to depress and deform the resilient block. Passageways extend through the resilient block to conduct liquid therethrough. A first passage includes a solid valve positioned therein. Compression of the resilient block breaks the seal around the valve by distorting the passageway to allow flow therethrough. A second passage includes a capillary to allow continuous low volume flow not controlled by an operator.
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