| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent a wash basin trap from running out of seal water or generating an abnormal noise, due to negative pressure during the operation of flushing the water closet, in a wash basin joining the water closet and the drain pipe with each other. Ž<P>SOLUTION: In this structure for installing the wash basin, the drain pipe, which joins the drain pipe of the water closet, is partially provided with a trap. A vent valve is provided upstream of a point where the water closet and the wash basin join each other. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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