| 摘要 |
PROBLEM TO BE SOLVED: To properly block the flow of fluid in a valve closing state using a valve with a simple structure. SOLUTION: In the valve, an opening/closing member linearly moves in a flow passage, and a fluid pressure is controlled according to the movement distance of the opening/closing member. The opening/closing member comprises a spherical or hemispherical first valve body, a cylindrical second valve body having an annular groove formed on the outer periphery, and a connection member for connecting the first valve body and the second valve body. When the first valve body closes the flow passage, the outer periphery of the first valve body is reliably brought into contact with a stepped portion. COPYRIGHT: (C)2009,JPO&INPIT
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