| 摘要 |
PROBLEM TO BE SOLVED: To provide a flow control valve device which does not accumulate impurities in a lead-out passage, properly and efficiently discharges the impurities to the outside, and is simplified in the structure of a valve box body.SOLUTION: A flow control valve device 3 has a structure having therein: a fluid passage 4 connected to a fluid pipe and communicating with the fluid pipe; and a lead-out passage 5 communicating with the lower part rather than the fluid passage 4, and formed of a deposition part 5a for depositing impurities flowing in the fluid passage 4 and a lead-out part 5b which can lead out the impurities deposited in the deposition part 5a to the outside. The flow control valve device also comprises a valve box body 7 of a divided structure which is constituted of at least: a first divided body 7a having a communication point 11 of the fluid passage 4 and the lead-out passage 5, and a divided port 12; and a second divided body 7b connected to the divided port 12 so as to be sealable. In the communication point 11, there are arranged a valve body 6 for controlling fluids in the fluid passage 4 and the fluid passage 5 by turning around a turning shaft Y via the divided port 12, and an annular sealing member 9c for sealing a clearance between the valve body 6 and the valve box body 7. |
