| 摘要 |
PROBLEM TO BE SOLVED: To provide a drain trap which can avoid upsizing thereof and ensures sufficient sealing height. SOLUTION: The drain trap has a first sealing chamber 22 to which a draining branch pipe 14 is connected and a second sealing chamber 23 arranged in a manner enclosing the first sealing chamber 22. The first sealing chamber 22 is arranged almost in a direction in which drainage flows from the draining branch pipe 14, and a drain port 16 is arranged at a distal end of the first sealing chamber 22. Herein the first sealing chamber 22 has an upper edge opening height different from that of the second sealing chamber 23, and both the sealing chambers set the sealing heights to sufficient values, respectively. COPYRIGHT: (C)2008,JPO&INPIT
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