| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a valve device which allows the valve body to be pushed to open the valve by the force of a fluid flow at the time when a fluid flows in through an inlet, but causes the valve body to come into close contact with the valve seat in the reverse flow direction to blocks the flow, and, in addition, can restore (for sampling) the flow being blocked as necessary. <P>SOLUTION: The valve device 1 relate to the invention is characterized in that a valve seat 7 is mounted on the back side of a flow path 6 communicating with a fluid inlet 5 to make a slider 9 which is mounted in the flow path 6 so as not to block the flow support the valve body 8 which faces the valve seat 7 to release the valve seat by means of the fluid flow coming from the inlet 5 and to operate so as to close the valve seat in the reverse direction, and is constructed such that the valve body 8 being in close contact with the valve seat 7 is released by pushing the slider 9 into the back by using the point tube 4 (needle base joint) of a syringe 3 inserted through the fluid inlet. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
