Installation video of flue check valve

Exhaust flue check valve, also known as smoke prevention treasure, inner wall cover, etc. , can prevent oil fume from flowing back, and prevent fire and mosquitoes. There are many hotels and houses, but most people don't know enough about it and don't know where to start when buying. I believe there are still many people who don't know what the kitchen flue check valve is for and how to install it after buying it. So what is the installation method of the kitchen flue check valve and what is the kitchen flue check valve? Let's give you a detailed introduction!

First, the kitchen exhaust flue check valve installation

The main flue runs through the whole building and the auxiliary flue is relatively independent. Generally, the lampblack at home will go to the auxiliary flue first, and then enter the main flue through the hole in the partition, so as to ensure that the lampblack of every household is isolated. However, if the auxiliary flue is directly connected with the main flue, it will lead to the phenomenon of backward smoke or cross smoke due to too low pressure.

Extend the pipe a little, so that after the range hood is turned off, a lot of oil smoke will gather in the pipe, which can't be discharged, and then it will be poured back indoors. In addition, in order not to destroy the original main and auxiliary flue, its opening direction cannot be changed at will, and it must be drilled in the auxiliary flue.

Generally, the end of the exhaust pipe is metal. If the hole is too small, metal heat transfer may cause the glass to burst and hurt pedestrians. Moreover, the smoke exhaust pipe leads to the window, and the strong north wind blowing on the face will lead to the backflow of oil smoke. In this way, when the pipeline is extended, it can sink, and when it rains, it can also prevent rainwater from flowing into the pipeline and keep the windshield out.

If the auxiliary flue has been removed, or it is necessary to better prevent the flue gas from falling back, then use the flue check valve. In general, the function of the check valve of the range hood is not obvious, but installing the check valve in the flue can protect the range hood, so that the flue gas in the flue will not flow back to the pipeline and the range hood.

Second, what is the kitchen exhaust flue check valve?

There are two kinds of check valves: one is flue check valve and the other is hood check valve.

1, flue check valve:

Refers to the non-return valve installed on the kitchen smoke crossing, which is usually equipped by the developer when handing over the house, and there is a metal baffle with an eccentric shaft inside. But usually the one made by the builder is not easy to use, and it can't completely prevent the smell from returning. One of its functions is to realize one-way exhaust and prevent odor and headwind. , so it's called a check valve. Another function is to fix the hose of the range hood so that the hose can be fixed on the wall. However, some builders did not have a check valve when handing over the house, and even did not leave a smoke crossing, let alone a check valve.

2. Hood check valve:

The non-return valve of the hood comes with the hood, the bottom is fixed on the top of the hood with screws, and the upper part is connected with a plastic telescopic smoke pipe. Generally, the check valve of range hood has two baffles, but at present, the check valve of range hood has the problem that the baffles are not tightly sealed (no matter how high-grade the range hood is), so it has the trouble of odor return of range hood.

The above is the installation of kitchen flue check valve and the introduction of what is kitchen flue check valve. If you don't know how to install the kitchen flue check valve, you can install it by the method in this paper. The importance of flue check valve to family health is self-evident, and I hope readers will know this product again.