In many industrial productions, ventilation butterfly valves are often used equipment, but outsiders do not know it very well. It is the first time to hear the name alone, let alone what kind of equipment it is. Below we will introduce it from two major aspects of its characteristics and uses. First of all, let's talk about the characteristics of the ventilation butterfly valve. Its structure is simple. It is a regulating valve and a non-closed butterfly valve. It can be used for on-off control of low-pressure pipeline media. From the perspective of the structural form, the advanced design of welding between the midline disc plate and the short structural steel plate is adopted. It is not only very compact, but also light in weight, simple to install, small in resistance, and relatively large in circulation. Can be used smoothly. From its internal point of view, there are no connecting rods, bolts, etc., ensuring long-term use and multi-station installation. Let's take a look at its use. As a non-hermetic butterfly valve, it is used in many industrial productions, such as building materials, electric power, metallurgy and other industries. It can transport a variety of media. The nominal pressure is 0.1 when the temperature is below 300 degrees. The Mpa pipeline plays the role of connecting, opening and closing or adjusting the amount of medium. To be simple and popular, it is a switch control device. In terms of the sealing of the ventilation butterfly valve, the materials used are rubber, polytetrafluoroethylene, etc., which can play a role in general occasions, but it is not suitable for industries such as high temperature, high pressure, corrosion resistance, and wear resistance. However, this equipment, compared with the traditional butterfly valve, is simpler in operation, more resistant to high temperatures, and has no friction when opening and closing. It is usually no problem for long-term use, and can be selected according to needs.