Flue check valves are the necessary furniture materials for home kitchens in recent years. Most of the flue check valves are made of stainless steel. Stainless steel flue check valves are popular in recent years. Currently, stainless steel cigarettes on the market. There are many brands of road check valves. Everyone does not know how to choose when purchasing. If you know the working principle and purchasing skills of stainless steel flue check valves, it will be much simpler when you purchase them. Let us tell you how the stainless steel flue check valve works and how to buy it.

1. What is a stainless steel flue check valve?

The stainless steel flue check valve is a classification of flue check valves and is generally used on pipes for exhausting flue gas in the kitchen. Connected to the exhaust pipe of the range hood, the main body of the stainless steel flue check valve is generally made of stainless steel plate cold-rolled plate, and the outer layer is painted to prevent rusting of the hair body, which not only effectively prevents the flue gas recirculation in the flue. And has a fireproof function.

Second, the working principle of stainless steel flue check valve

The flue check valve refers to a valve that automatically opens and closes the valve piece by means of the thermal flow of the range hood, and is used to prevent the backflow of the soot, and is also called a flue check valve, a smoke prevention treasure, and a flue isolator. The flue check valve is an automatic valve whose main function is to prevent the soot from flowing back, allowing only one direction to flow and preventing the air flow from flowing in the opposite direction. When the temperature in the flue reaches 150° (the flue temperature reaches 150° by default, there is an open flame in the flue), the temperature control element on the back of the valve body acts, and the switch is turned off. The valve piece forcibly closes the valve under the action of the spring rebound, preventing the fire from spreading through the soot exhaust port to the room. This type of valve is automatically opened and closed by the force generated by the flow of the medium itself in the pipeline, and is an automatic valve. Check valves are used in piping systems and their primary function is to prevent backflow of media and to be applied to pipes of various media. The check valve is installed on the pipeline, which is one of the fluid components of this complete pipeline. The flue check valve, also known as the inner wall hood, is also an environmentally friendly product promoted by the Ministry of Construction. It has been widely used in modern housing construction. It can prevent the backflow of soot and the connection of pipes.

Third, how to choose stainless steel flue check valve

There are many types of check valves on the market, which can be roughly divided into two types: built-in check valves and external check valves: the built-in valve is located on the inner wall of the flue, and the installation process is convenient. There is no requirement for the size of the opening, as a supplement. The measures can only solve the problem temporarily for families who have already decorated their homes with smoke and smoke. Because the built-in check valve does not match the air outlet of the hood pipe, it will generate noise; in addition, the resistance will block the discharge of the soot, and a large amount of grease will be generated for a long time, and the grease will flow into the kitchen along the wall of the tile, so that neither It is also difficult to clean up, which increases the troubles of the housewife. External flue check valve, compact and beautiful, easy to install. The air outlet is the same as the air outlet of the hood, and no noise is generated. Moreover, a sealing ring is arranged around the valve plate to prevent the grease from sticking, and the problem that the one-way valve cannot be opened or closed is avoided. In addition, a flow guiding device is arranged below the valve piece, and the oil scale will flow into the public flue through the oil guiding nozzle through the guiding device, and will not flow back into the room. It can effectively eliminate the pollution and prevent the entry of harmful gases in the flue. It can completely solve the problems of odor, cross smoke, backflow and odor, improve the air quality of the kitchen and bathroom, keep the indoor air fresh, and realize the real comfort and health of the home environment. .