| 摘要 |
PURPOSE: An automatically-closed flow-path change valve is provided to dramatically reduce a time period to open and close a valve by opening or closing a flow path pressing a push rod. CONSTITUTION: An automatically-closed flow-path change valve(100) comprises a body(110), a first check valve(140), a second check valve(150), and a push rod(120). The body comprises an inlet flow-path(112) and an outlet flow-path(113). The first and second check valves are respectively installed on the inlet flow-path and the outlet flow-path and block the flow paths by elastic force. The push rod is formed on the body to be able to elastically move. If the push rod is pressed, the first and second check valves are opened, and if the pressure is removed, the push rod is restored, so the gap between the flow-paths is blocked by the elastic force of the first and second check valves.
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