When in use, the indicating pointer of a valve plate is rotated to point to some branch pipe on the dial plate, and the liquid of the liquid inlet main pipe flows to the branch pipe.
使用时，转动阀盘指针对准刻度上的某一支管，进液主管的液体就流向该支管。
When in use, the indicating pointer of a valve plate is rotated to point to some branch pipe on the dial plate, and the liquid of the liquid inlet main pipe flows to the branch pipe.
使用时，转动阀盘指针对准刻度上的某一支管，进液主管的液体就流向该支管。
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