According to the deformation mode after being loaded, pneumatic butterfly valves can be divided into bag type pneumatic butterfly valves, membrane type pneumatic butterfly valves and hybrid pneumatic butterfly valves. Among them, the membrane pneumatic butterfly valve includes the constrained membrane pneumatic butterfly valve and the free membrane pneumatic butterfly valve. Since the free film pneumatic butterfly valve has the advantages of light weight, good mechanics and performance, this type of air ball valve is widely used as the secondary suspension of the bogie in China's high-speed EMUs. The pneumatic butterfly valve shown in Figure 1 is a free diaphragm pneumatic butterfly valve. An orifice is arranged in the center of the lower cover plate of the free film pneumatic butterfly valve, and the lower end of the orifice is connected with an additional air chamber. Pneumatic butterfly valve: a ball valve made of the compressibility of air in a closed container. It is widely used in self-adjusting air suspension of commercial cars, buses, rail vehicles, machinery and building bases. The pneumatic butterfly valve technology is applied to the valves of industrial equipment, which effectively improves the working efficiency and safe service life of the equipment. Dongfeng pneumatic butterfly valve does not have internal control rod, piston or sliding sealing device like ordinary cylinder type device, which greatly reduces the cost of using pneumatic or hydraulic cylinder and wins more economic benefits for customers.
characteristic:
● Low cost and wide range of specifications
● Long service life, no need for maintenance and lubrication, no need for internal lever or piston
● Soft medium without friction effect
● Bending capacity, side load capacity, compact original height
For more information about pneumatic butterfly valves, please check the official website of Shanghai Dongfeng Pneumatic Butterfly Valve. Shanghai Dongfeng Pump Valve Factory specializes in the production of pneumatic butterfly valves. Its quality makes you feel at ease!