| 摘要 |
A valve device is provided, so that a minute flow amount of fluid is capable of being set and a flow passage is prevented from being disturbed by a foreign matter. Specifically, the valve device includes: a drive source; a turning member, being driven and turned by the driving source; a valve body, being fixed to the turning member in a state that an end face of the valve body and an end face of the turning member in an axial direction are contacted with each other, and the valve body is integrally turned with the turning member; and a valve seat, being sliding contacted with an end face of the valve body opposite to the end face of the valve body contacting with the turning member. The valve seat has at least one outflow hole for fluid passing through the valve device, and the valve body has a throttle part which is a minute hole that communicates with the outflow hole in a part of a turning angle of the valve body. A flow passage has an opening part which is provided between opposed faces of the turning member and the valve body, so that the throttle part is communicated with an inflow hole for the fluid and so that inflow of an individual matter having a size which is unable to pass through the throttle part is shielded. |
