| 摘要 |
PROBLEM TO BE SOLVED: To provide a valve device which can suppress a wear of a pressing portion of a cam portion of a second stem, and suppress the lowering of pressing force.SOLUTION: A second stem 6 has a columnar cam portion 61 at one end portion, and a part of a peripheral surface of the columnar cam portion 61 forms a pressing portion 61a. The cam portion 61 is inserted in a recessed portion 710 of a connecting portion. While a non-penetration part of a valve body 2 is opposite to a sheet member, the second stem 6 is rotated in one direction around an axis, thereby pressing an inner surface 71 of the recessed portion 710 of the connecting portion with the pressing portion 61a of the cam portion 61. On the other hand, the second stem 6 is rotated in the other direction around the axis, thereby releasing the pressing by the pressing portion 61a, and rotations about the axis of a valve body 2 can be permitted.SELECTED DRAWING: Figure 2 |
