| 摘要 |
PROBLEM TO BE SOLVED: To provide a drainage trap which is improved in reliability in leakage and ensures good seal water depth thereof. SOLUTION: The drainage trap is comprised of a seal water tank 3 formed therein, an outlet 4, and a plurality of inlets 5, 6 formed in a top face thereof. The inlets 5, 6 have seal water pipes 9, 12, respectively, which hang in the seal water tank 3.
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