Is the flue check valve useful? Installation method and precautions of flue check valve

Flue check valve is also known as reverse flow valve, check valve, back pressure valve and one-way valve. This type of valve is automatically opened and closed by the force generated by the flow of the medium in the pipeline, and belongs to an automatic valve. Many people will wonder whether it has any effect on earth? Is it worth installing one? The following quick screen editor will tell you whether it is worth installing a flue check valve!

The check valve is used in the pipeline system. Its main function is to prevent the backflow of the medium and can be applied to the pipeline of various media. When the check valve is installed on the pipeline, it becomes one of the fluid components of the complete pipeline. The flue check valve, also known as the inner wall hood, is also an environmental protection product promoted by the Ministry of construction. It has been widely used in modern housing construction. The emergence of the flue check valve has solved a big problem for the new high-end residence. It can not only prevent the back flow of oil fume, but also play the role of pipe connection.

The flue check valve shall participate in the smoke exhaust management to solve the problem of exhaust to a great extent. The reason why the general valves on the market are not in place is that they can only stop the reverse flow and do not participate in the smoke exhaust management. Wanju pressure relief valve can be used. The five smoke prevention system for kitchen and bathroom exhaust of Wanju residence is a system to solve the smoke exhaust problem as a whole. Effectively prevent the toxic exhaust gas and oil smoke discharged from other people’s homes in the public flue from pouring back into their own homes. At the same time, it can also prevent mosquitoes, moths, flies and other insects, as well as reptiles such as geckos from entering the home. The most important thing is that it can ensure the air hygiene and safety in your home.

To sum up, we will understand that it is better to install a flue check valve!

Installation method of flue check valve:

1. Install the fire-proof flue check valve at the reserved check valve opening of each flue. First mix the cement with special glue, coat the edge of the check valve, and then install it at the reserved check valve opening.

2. An oil retaining net is installed at the air inlet of the valve body, and there is an oil receiving box under the net. The oil retaining net is connected with the air inlet of the valve body in the form of movable pumping; The check valve cavity behind the oil screen is equipped with a whole plate damper; The air inlet pipe body is sleeved in the check valve cavity; The damper is installed on the pipe body through an eccentric shaft fixed on the pipe wall of the air inlet, and the air outlet of the check valve can be opened and closed around this shaft.

Precautions for installation of flue check valve:

1. The auxiliary flue must be reserved

Every kitchen has a flue, and the flue is divided into main and auxiliary flue. The main flue runs through the whole building, while the auxiliary flue is relatively independent. Generally, the lampblack in the house will go to the auxiliary flue first, and then enter the main flue through the hole on the partition plate, so as to ensure that the lampblack in each household is isolated. If the auxiliary flue is directly connected to the main flue, the pressure will be too low, which will lead to smoke pouring or smoke stringing.

2. Pay attention to construction details

First, it is very important to select the installation position of the range hood. The shorter the pipe, the better. Some owners will stretch the pipes longer for the sake of beauty. In this way, after the hood is turned off, a lot of lampblack will be accumulated in the pipes and cannot be discharged, and then poured back into the room. In addition, in order not to damage the original main and auxiliary flue, the opening direction can not be changed at will, and must be placed in the auxiliary flue.

3. Smoke exhaust from windows, pay attention to safety

In order to avoid the problem of smoke emission, some owners give up the original flue and directly open holes on the windows for smoke emission. This is OK, but there are several points to be noted.

First, the consent of the property must be obtained before opening the window or wall; Secondly, pay attention to safety. Generally, the end of the smoke exhaust pipe is made of metal. If the hole is too small, the metal heat transfer may cause the glass to crack and injure pedestrians. Moreover, the smoke pipe leads to the window, and the strong north wind will blow against it, which will cause the oil smoke to pour back. It is better to put the pipe down after the pipe is stretched out, so as to prevent the rain from flowing into the pipe when it rains and keep the wind out.

4. Check valve shall be replaced frequently

If the auxiliary flue has been removed, or the effect of preventing smoke pouring is better, use the flue check valve. In general, the effect of the check valve of the range hood is not very obvious, but the check valve installed in the flue can protect the range hood, so that the smoke in the flue will not pour back into the pipe and the range hood. However, after the check valve is installed, it should be cleaned regularly, otherwise the check valve will be opened and lose its effect. Moreover, the check valve of the flue should be replaced every two years or so.