What is the function of the return bend of the toilet

It should be called a trap, which can prevent all kinds of polluting gases and insects in the drainage pipe from entering the room. In order to ensure the normal function of the water seal, the design of the drainage pipe must be considered to be equipped with appropriate ventilation pipes.

The water seals the drain and prevents odors and small insects from entering the drain. Once the trap leaks, the water level in the pit will naturally drop. The trap is divided into S-type trap, P-shaped trap, U-shaped trap, S and P, you can vividly illustrate the shape of the trap.

The backwater bend, also known as the submersible bend, is structured so that the user always has water in the elbow during use, forming an isolation of odors.

You can't lengthen the backwater bend as far as the "bend" is concerned, and the toilet is made with this structure. And the squatting toilet with a submersible bend is also made with this structure. Toilets with submersible bends can be connected directly to the sewage pipe.

When the squatting toilet is changed to a toilet, there is no effect, and there will be no poor drainage or blockage.

It mainly plays the role of odor insulation, at least the toilets are like this, you can rest assured that it will not be blocked, as long as the toilet is in place.

The backwater bend is to prevent back-smelling. Generally, a good quality toilet will not clog easily.

Brainless, there's no one who chokes you when you open the door.

I'm afraid that you won't be able to get out of your phone if you drop it.