The downstairs toilet flushes, and the water seal in the upstairs toilet dries up

Updated on Toilet 2024-08-25
3 answers
  1. Anonymous users2024-01-24

    The reason for this is that the sewer main does not go to the roof of the building and is connected to the atmosphere, and when the water is flushed on the second floor, the main pipe is under negative pressure, and the water in the toilet on the third floor is sucked away.

  2. Anonymous users2024-01-23

    First of all, it must be that the roof supervisor is not ventilating.

    Secondly, the old toilet is okay because the siphon power is weaker.

    The negative pressure generated on the 3rd floor is small, not enough to suck out the water of the toilet on the 3rd floor, and the solution is that the roof must be ventilated.

  3. Anonymous users2024-01-22

    This is because the roof vent of the sewer pipe is closed.

    Just deal with it.

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