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I'm from Jinyang Pipe, 2 sewer pipes are normal, and one can be used as a floor drain.
The two sewer pipes in the high-rise toilet are sewage pipe and ventilation pipe. >>>More
Sewage, toilet access to the pipe called the domestic drainage riser, the other pipe called the special ventilation riser, the current installation of the drainage riser specification is De110, its drainage capacity is a certain limit, beyond this limit, it is necessary to increase the special ventilation riser, otherwise the drainage will produce air resistance, affect the drainage, and the higher the floor, the greater the impact. >>>More
Straight head? Tee?
It depends on what you are saying about the purpose of the processing. >>>More
Then the downstairs is miserable, the sewer pipe is not ventilated, and the downstairs toilet drains from other drains or floor drains.