The bathroom is equipped with a check valve or the smell of smoke

There is no check valve in the bathroom.

One. Basic concepts.

Flue check valves are generally used in the exhaust flue of range hoods at home, including range hood check valves, plastic telescopic smoke pipes and flue check valves. The check valve is mainly composed of the valve body, rocker, valve cover, etc.

Two. Classify.

1.Range hood check valve.

The range hood check valve is also called the name of air outlet, exhaust outlet and air hood, etc., it is the range hood comes with, the bottom is fixed on the top of the range hood with screws, and the upper part is connected to the plastic telescopic smoke pipe.

2.Plastic retractable smoke pipes.

The caliber of the plastic retractable pipe is also divided into 18cm, 17cm, 16cm and 15cm, and the caliber of your pipe can only be known by measuring it yourself.

3.Flue check valve.

Flue check valve refers to the check valve installed at the flue mouth, the general builder will be equipped with a good when handing over the house, the actual ventilation diameter is 15cm, and the inside is a metal baffle of an eccentric shaft, which is difficult to achieve complete reverse sealing.

4.Dry check valve.

Mainly composed of valve body, rocker, bonnet, valve seat, sealing seat, etc., when working, the gas opens the valve cover under a certain pressure from the air inlet into the check valve, and flows out from the outlet, when the air pressure suddenly decreases, the valve cover is driven by the rocker, and automatically covers the valve seat to play a sealing role, so that the gas will not flow backwards.

The air duct in your house may have been blocked by more than half, so the smoke exhaust effect is not very good, it is recommended that you block the original channel, and then punch holes directly out of the wall, and the current public passage has nothing to do with it.

1. The quality of the check valve is not good. 2. The seal around the check valve is not tight. 3. There are damaged places around the pipe. All of the above can occur.

Then don't smoke in the bathroom, let alone if you have children.

When decorating the bathroom, there must be necessary exhaust measures to install a check valve at the exhaust outlet of the bathroom, and be sure to use glass sealant around the sealing treatment, so as to prevent the smell from overflowing from the side, and at the same time, it can also prevent the production of odor, and the drainage pipe under the washbasin is best to use S-shaped, which can play a role in preventing odor. Second, the usual use of the bathroom precautions people have to use the bathroom every day, the bathroom is also a perennial water place, so the floor drain is also a part that needs to be maintained and cleaned regularly, it is best not to put small pieces and some non-perishable things into the daily use, especially the hair, people should pay attention to the hair that falls off when taking a bath into the bucket, because the floor drain will also emit odor if these things accumulate for a long time.

The public flue smells of smoke return.

The bathroom is equipped with these two, and it is useless.

Ask a professional installer.