| 摘要 |
PROBLEM TO BE SOLVED: To provide drain piping capable of controlling a flow rate, occurrence of a siphon phenomenon and the like by stabilizing a drainage flow even when the force of water and the like are changed.SOLUTION: A guide part 17, which comprises a guide part 17a assuming an approximately dogleg shape in a plan view, is provided within an approximately cylindrical connection member 3. A low-pressure movable part 26 of a valve body 20 is disposed in a position into which drainage guided by the guide part 17 flows. The drainage flowing in from an inflow port 4 is guided toward the center of the piping by the guide part 17, and flows into the low-pressure movable part 26 of the valve body 20 while producing an eddy current. |
