| 摘要 |
PROBLEM TO BE SOLVED: To provide a drainage vent pipe that facilitates (or enables) piping work even when a space for a drain pipe in a building is narrow, and drainage ventilation facilities using the same.SOLUTION: A drainage vent pipe is a pipe for being used as at least a part of a drainage system (2) of a drainage body (1). A partition wall (13) for partitioning an in-pipe space (S) into a drainage space (S1) and a ventilation space (S2) along an axial direction of the pipe is provided so that a single pipe (10) can possess a drainage function and a ventilation function.SELECTED DRAWING: Figure 4 |
