drainage vent pipe and drainage ventilation equipment using this drainage vent pipe

摘要

The present invention object of the present invention is to provide a wastewater aeration using a drainage vent pipe and the drainage vent pipe to the plumbing, even if space for the drainage pipe is narrow can be easy (or possible) in the building We provide the equipment. The invention relates to a tube for use as at least part of the drainage system of the drainage body (1) (2), for along the pipe space (S) in the axial direction of the tube, a drainage space (S1) vent By and a partition wall (13) which divides the the space (S2), the single tube (10), and can have a drainage function and a ventilation function.BACKGROUND 4