| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure control valve which is provided with a diaphragm and can stably perform opening and closing operation of a valve opening by a valve body. SOLUTION: In this pressure control valve 10, an abutment member 50 is positioned at the center of a circular pleat 44A of the diaphragm 44 by a centering projection part 50A and a centering recessed part 44B, thus an axial force is applied to the center of the circular pleat 44A to equally deform the circular pleat 44A over the entire perimeter, thereby stabling repulsive force of the diaphragm 44. In this way, the opening and closing operation of the valve opening 39 by the valve body 33 is stabilized. COPYRIGHT: (C)2006,JPO&NCIPI
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