| 摘要 |
PROBLEM TO BE SOLVED: To enhance the reliability of a check valve and secure the versatility of the valve. SOLUTION: The check valve is equipped with a hollow conduit 1 furnished at one end with a flow inlet 3 and at the other end with an outlet 5, a poppet 7 installed movably in the conduit 1, an outer magnet 19 installed on the conduit 1, and an inner magnet 15 installed inside the poppet 7, wherein the poppet movement and its direction are decided by the relation of the differential pressure between the pressure B at the outlet and the pressure A at the inlet to the magnetic forces M of the inner 15 and outer magnet 19.
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