Could someone please upload a video or relevant materials on check valves with a shut-off function?
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O(∩_∩)O Thank you
It’s similar to a globe valve, except that the valve disc is movable and can move up and down. When flowing in the reverse direction, it returns to its original position automatically due to gravity and the fluid’s momentum, thus sealing itself.
This is explained very clearly. . . Check Valve_Choosan Encyclopedia http://baike.so.com/doc/history/id/506254