| 摘要 |
PROBLEM TO BE SOLVED: To provide a drain collection pipe coupling capable of preventing a backflow of drain water to a horizontal branch pipe connection part and splashing-back of the drain water in a lower edge part of the horizontal branch pipe connection part.SOLUTION: The present invention relates to a drain collection pipe coupling 1 having vertical pipe connection parts 5 and 6 in an upper end part and a lower end part, and having a cylindrical coupling body 13 having horizontal branch pipe connection parts 11 and 12 on a side surface. A longitudinal rib for preventing a backflow of drain water 14 to the horizontal branch pipe connection parts 11 and 12, is integrally projected in a side part of the horizontal branch pipe connection parts 11 and 12 on an inner peripheral surface of the coupling body 13. A cylindrical eaves forming member having an eaves part 23 for preventing splashing-back of the drain water 14 in a lower edge part of the horizontal branch pipe connection part 12, is installed on the inside of the coupling body 13. A slit-like fitting part fitted-locked from above to the longitudinal rib, is provided in this eaves forming member.SELECTED DRAWING: Figure 1 |
