Working principle of toto toilet water tank flap

Air pressure and water pressure. According to relevant public information, the principle hole of toto toilet is located at one side of the sewer pipe, with a diameter of 2cm, and the direction is opposite to that of the sewer pipe. Some toilets have a small hole in the middle of the sewer pipe, which is also an air return hole. With the air return hole, it can ensure that the toilet can form a vortex when pumping water, and the sewage in the toilet can be pumped into the sewer pipe, and the blockage will also lead to the failure of the toilet pumping function. Toilet means a covered bucket for defecation, which means a covered bucket for defecation.