| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a drain collecting pipe joint for decelerating a drain flow while imparting excellent revolvability, inhibiting air-pressure fluctuation and preventing a backflow to a horizontal branch pipe. SOLUTION: The drain collecting pipe joint has an upper riser end connection 11, a main body section 12 having a straight-pipe drum section 13 and a tapered pipe section 14 and being installed to the lower section of the upper riser end connection 11, a lower riser end connection 19 mounted to the lower section of the main body section 12, at least one horizontal branch-pipe end connection 20, which is set up to the main body section 12 and to which a horizontal branch pipe can be connected, and at least one first revolving guide 25 and second revolving guide 30 projected and formed to the inner circumferential wall of the main body section 12. The first revolving guide 25 and the second revolving guide 30 are asymmetrically fitted oppositely at that time.</p> |
