| 摘要 |
PROBLEM TO BE SOLVED: To provide a valve device which prevents a circulation object from entering into a circulation passage of a fluid sprayed onto a valve body.SOLUTION: A valve device includes: a valve body 2 which is provided so as to rotate around a predetermined axis and includes a communication passage formed therein; a housing having a valve body housing chamber, in which the valve body 2 is installed, and two main passages communicating with each other through the communication passage; a seat member 4 facing an area around the communication passage of the valve body 2 which allows the main passages to communicate with each other; and an annular member 5 disposed in the housing. The housing includes: a housing part 31 which houses the seat member 4 and the annular member 5; and a supply passage 32 for supplying a fluid from an exterior part to the housing part 31. The valve device relatively moves the seat member 4 and the annular member 5 to open or close a discharge passage 35 formed between the seat member 4 and a contact part 53 of the annular member 5.SELECTED DRAWING: Figure 6 |
