Unidirectional valve appliance

Details Unidirectional valve appliance Unidirectional valve appliance

2005-08-23

2005-08-23

Rivell, John (Department: 3753)

Fluid handling

Line condition change responsive valves

Direct response valves

C604S247000

Reexamination Certificate

active

06932110

ABSTRACT:
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.

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