| 摘要 |
A fluid control valve includes a housing having a seat ring and a plate spring, a butterfly valve, and a valve shaft. The valve shaft has a plane-surface portion and a cam portion, which are arranged adjacent to each other. The fluid control valve is configured such that when an opening degree of the butterfly valve is a first valve opening degree or more, the cam portion is brought into sliding contact with the seat ring and the seat ring is pushed to a location radially outward of a moving path of the butterfly valve against elastic force of the plate spring. Thus, occurrence of uneven wear on a seat surface of the seat ring can be suppressed.
|
