| 摘要 |
<p>The invention relates to a unidirectional valve appliance, in particular a low pressure check valve for use for an infusion comprising a housing with an inlet and an outlet, and with at least one gasket in a pressure chamber. To prevent air entry into the infusion fluid circuit, the appliance includes an interruption of the flow by means of a static vacuum to the inlet and/or outlet or excess pressure at the outlet. This ensures in reliable manner that a flow of the infusion fluid in a reliable manner only when a static excess pressure differential is exposed to the inlet.</p> |
