| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a valve having less risk of fluid leaking to the outside. <P>SOLUTION: The valve 100 includes a valve casing 110 formed with a flow passage inside, a valve element 120 arranged in the flow passage of the valve casing 110, a valve seat 111 by which the valve element 120 is caught together, and a pressing bar 130 pressing and moving the valve element 120 to open and close the flow passage. At least a part of the pressing bar 130 has a screw thread in the outer peripheral surface. The inner peripheral surface of the valve casing 110 has a screw groove of a diameter larger than the diameter of the screw thread. The pressing bar 130 is screwed to the screw groove in a manner of allowing eccentricity. By moving the valve casing 110 in circular motion around the flow passage direction as an axis, the pressing bar 130 rotates on its axis, linearly moves in the flow passage direction and presses the valve element. <P>COPYRIGHT: (C)2013,JPO&INPIT |
