| 摘要 |
PROBLEM TO BE SOLVED: To provide drainage piping in which a drainage trap is disposed on a flow passage of the drainage piping and which, in the case a blockage or the like of the piping caused by the drainage trap occurs, allows easily removing the blockage of a drainpipe or easily cleaning the drainage trap or the drainpipe.SOLUTION: Drainage piping for discharging drain water from equipment comprises a trap unit 1 which is provided in a flow passage of the drainage piping, and an opening for taking out the trap unit 1 on a wall surface of the drainage piping. Furthermore, in the drainage piping, the opening is provided in a curved portion of the drainage piping. Moreover, in the drainage piping, the opening is provided on a side surface of a pipe body of which both ends are disposed on a straight line. In the drainage piping, the trap unit 1 includes a tubular body, a flow passage part provided in the tubular body, a trap part provided in the flow passage part, and annular packing provided on a side surface of the tubular body and both ends of the flow passage part are disposed in different areas among areas divided by the annular packing. |
