| 摘要 |
A flow control device comprises an inlet port through which fluid is supplied, an outlet port through which the fluid is delivered, a valve body which is arranged in a passage between the inlet port and the outlet port so as to open and close the passage, the flow control device further comprising a valve body guide means which urges downwardly and pulls upwardly the valve body so as to allow the fluid in the passage to flow at a flow rate which is lower than a basic control rate of the flow control device.
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