Abstract
Pressure relief valves are needed in almost any fluidic system. The goal of such a valve is to avoid dangerous overpressure inside the channels and cavities. Conventional spring based pressure relief valves are difficult to integrate in flat micro fluidic systems and small pressure values are difficult to achieve. The here presented solution is a simple flat structure using permanent magnets. The set pressure can be adjusted in a very large range. The suggested solution has faster opening and closing behaviour compared to spring based valves, is self-aligned and very easy to built. The here presented valve was build in the fluidic printed circuit board technology and works at a set pressure of 300mBar.
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