The role of the U shaped pipe installed in the sewer of the bathroom

The sewer U-shaped pipe, also known as the bai water trap, is mainly used to prevent odors and flying insects from entering the chamber from the sewer.

A certain height of water column (generally 50 100 mm) is formed in it, and the water storage height of this part is called the water seal height, which can prevent all kinds of polluting gases and small 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.

There are two kinds of water traps with clear plugs and without clear plugs, which can also be divided into P-shaped and S-shaped according to different shapes. The height of the water seal is related to the change of air pressure in the pipe, the evaporation rate of water, the loss of water volume, the content and relative density of impurities in the water.

The U-shaped pipe installed in the sewer channel is also known as the water trap, and its main function is to prevent odorous gas and flying insects from entering the room from the sewer.

A certain height of water column (generally 50 100 mm) is formed in its answer, and the water storage height of this part is called the water seal height, 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.

Precautions. In addition to the water seal of the trap is easy to be damaged due to the insufficient depth of the water seal, some sanitary appliances are used for too long intermittent time, especially the floor drain, there is no water replenishment for a long time, and the water surface of the water seal continues to evaporate and lose the water seal effect, which is the main reason for the odor escape, so the management personnel are required to have common sense in this regard, and it is necessary to regularly inject water into the trap part of the floor drain.

In recent years, the double-channel and three-channel floor drains produced by some manufacturers in China have solved the problems of water replenishment and odor escape, and some countries have adopted the practice of special water injection pipes for the starting point floor drains.

The installation of U-shaped pipes is what we often call water reproduction pipes. If there is no U-shaped pipe, the smell in the gutter will be directly reflected from the floor drain, wash basin drain, etc., so don't just go to the backwater pipe when decorating, and the smell in the bathroom will outweigh the loss.

Prevents odor from returning. As shown in the figure, if it is a straight pipe, then there will be no stagnant water in the pipeline, the smell will come up, but the elbow will not, and the stagnant water will stay in the U-shaped bend, forming a water seal to block the odor.

Store water to prevent the smell of the septic tank from returning to the room. The drainage design is very good, but now many houses do not have this water fittings, sometimes it will be very delayed, and the small anti-odor pieces can be set up indoors to facilitate the cleaning of pipes.

Odor-resistant and easy to maintain; There should be a screw at the bottom of the U-tube, right? If the water pipe is clogged, then twist the screw and drain it.

B stops the smell from entering the house