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The flush rotation of the toilet has nothing to do with the northern and southern hemispheres of the earth, but with its pipe design.
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This toilet of yours is siphon-type!
You should buy a jet siphon type and it won't turn!
It's just sucking it down.
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Some flush functions are swirled, and that's it.
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Siphon is like this.
This is due to the effect of the Earth's rotation, where the water rotates under the action of inertial centrifugal force, which creates vortices. In general, the direction of the vortex in the Northern Hemisphere is counterclockwise, while in the Southern Hemisphere it is clockwise.
Toilet drains and floor drains.
The sewers are connected, and when there is pressure, some of the air from the floor drain will be squeezed out. You can replace it with an anti-odor floor drain. Hope. >>>More
When the toilet is installed, the bottom drain port is not equipped with a flange ring, and the toilet is a little loose at present.
In fact, the role of the whirlpool is to create the force of the water flow, and to create a local low pressure around the whirlpool, forming pressure drainage.
When flushing the toilet, the splash of water can reach a height of up to three meters (not noticeable to the naked eye), and there are many bacteria in the toilet bowl and poop, so it is hygienic and safe to close the toilet lid and then flush it. I hope to answer your doubts, hope to adopt, thank you!