| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a branch connection which enables drainage to smoothly flow through a branching part. SOLUTION: A tubular connection body 51 is inserted in a connection port 37 of a riser pipe 32 of a public loge 30. This connection body 51 has a curved flange part 56 in the outer peripheral side of an end part located inside of the riser pipe 32. A spacer body 53 is fitted on the outer peripheral side of the connection body 51 at the end part thereof which is located outside of the riser pipe 32, and a nut body 54 is fastened and engaged to the space body 63. In this engaged condition, the peripheral edge part of the connection port 37 and the spacer body 53 are located between the nut body 54 and the curved flange part 56 so that the connection body 51 which holds at its inner peripheral surface a branch pipe 41 fitted thereby is fixed in the connection port 37. The inner peripheral surface of this connection body 51 is formed as a cylindrical surface having a uniform diameter and having an inner diameter with which the downstream end part of the branch pipe 41 can be loosely fitted in the connection body 51, extending from the axially one end to the other end thereof.</p> |
