| 摘要 |
PROBLEM TO BE SOLVED: To provide a drain trap in which a watertight member of a deodorizing cylinder is arranged in a seal water part and prevented from deteriorating due to seal water in the seal water part. SOLUTION: The drain trap is composed of a trap body, a flange member and the deodorizing cylinder which is a cylindrical body opened in upper and lower parts and in which a mounting part is provided on an upper end side; and the mounting part is constituted in such a manner that an annular part, the watertight member and a protrusion are arranged from above in turn, so that the watertight member can be made hard to submerge in the seal water part.
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