The structural characteristics of modern metal hard seal butterfly valves

The metal hard seal butterfly valve is a kind of regulating valve with a very simple structure. It is mainly used for throttling and cutting off the medium in the pipeline. It is mainly used in the fields of coal gas, natural gas, steam, hot and cold air pipes, chemical smelting, power engineering and other fields. Hard-sealed butterfly valves can be divided into manual hard-sealed butterfly valves, electric hard-sealed butterfly valves and pneumatic hard-sealed butterfly valves according to different driving methods. The hard seal butterfly valve is small in size and light in weight, so it is convenient to install and disassemble, and the operation is quite simple. The current hard seal butterfly valve adopts advanced triple eccentric design. The advantage of this structural design is that the sealing surface of the hard seal butterfly valve avoids friction transmission. This change greatly extends the service life of the hard seal butterfly valve and changes the generality of the hard seal butterfly valve. Short service life and high maintenance costs.