| 摘要 |
<p>PROBLEM TO BE SOLVED: To facilitate a repairing work by connecting connections on the upper stream side of drain pipes penetrating floors of respective stories with insert flare joints, and connecting connections on the lower stream side of drain pipes with flare flange joints. SOLUTION: Connection on the upper stream side of a drain pipe 3 provided between drain pipes 1 penetrating the floors of respective stories of a building is connected to the lower stream side of the of the drain pipe 1 of the upper story through an insert flare joint 4. Further, connection on the lower stream side of the drain pipe 3 is connected to the upper stream side of the drain pipe 1 of the lower story through a flare flange joint 12, a hing band is fitted so as to fasten through bolt/nut. Next, in the case of a cleaning and improving work, the insert flare joint on the upper stream side and the hinge band of the flare flange joint 12 on the lower stream side are detached, and packing 16 is detached so as to detach the drain pipe 3. Consequently, the drain pipe can be fitted and detached only in a specified story so as to execute a piping work.</p> |
