Evolutionary History of Butterfly Valve

In our daily life and production, pneumatic butterfly valve plays an important role. It is a kind of valve with great function. The appearance of pneumatic flange butterfly valve promotes the efficiency of production to a great extent. It is a kind of valve that revolves around the valve axis to open and close. It mainly cuts off and throttles the pipeline. The PKD wafer butterfly valve is a disc type butterfly plate, which rotates around its own axis in the valve body, so as to achieve the purpose of opening and shutting or adjustment.

Polytetrafluoroethylene has the characteristics of strong corrosion resistance, stable performance, not easy to age, low friction coefficient, easy to form and stable size. In addition, the polytetrafluoroethylene can also be filled and added with appropriate materials to improve its comprehensive performance and obtain butterfly valve sealing materials with lower strength and friction coefficient, overcoming some limitations of synthetic rubber, so polytetrafluoroethylene, as a representative of this polymer, has been widely used in butterfly valve. Thus, the performance of butterfly valve is further improved that the temperature and pressure range is wider, the sealing performance is better, and the service life is longer. In order to meet the needs of high and low temperature, strong erosion, long life and other industrial applications, the metal seal butterfly valve has been greatly developed in recent years. With the application of the alloy materials which have high temperature resistance, low temperature resistance, strong corrosion resistance, strong erosion resistance and high strength in butterfly valve, metal seal butterfly valve has been widely used in high and low temperature, strong erosion resistance, long life and other industrial fields. The technology of pneumatic stainless steel butterfly valve has reached a new level.

The original butterfly valve is a simple and loosely closed flapper valve. It is usually used as a flow regulating valve and damping valve in water pipeline systems. With the application of chemical resistant synthetic rubber in butterfly valve, the performance of butterfly valve is improved. Due to its corrosion resistance, erosion resistance, stable size, good resilience, easy forming and low cost, synthetic rubber with different properties can be chosen according to different use requirements to meet the use of butterfly valve, it is widely used in the manufacture of butterfly valve liner and elastic base.