| 摘要 |
PROBLEM TO BE SOLVED: To provide an adjusting valve instantaneously corresponding to a change of fluid pressure and quickly converging to a set value. SOLUTION: The adjusting valve is provided with a body 1 having an inlet passage 8, an outlet passage 9, a valve chamber 7 in between and an opening part 10 communicating with the inlet passage and diametrally reduced along a flowing direction, a bonnet 2 having an internal void 12 communicated with an air supply port 11, a spring receiver 4 held by the body and the bonnet, a rod 5 having a collar part 15 in an upper part and a lower end piercing the spring receiver, a spring 6 supported between the collar part and the spring receiver and energizing the rod, and a diaphragm 3 with an upper end connected to the rod 5, a circumferential rim part held by the body and the bonnet, and a plug part 18 of a lower end positioned in the opening part 10. The plug part 18 is arranged inside the opening so that an opening area of a passage between the opening part 10 and the plug part 18 changes by a vertical motion of the rod 5.
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