Elastic structure composition of metal hard sealing butterfly valve

by:Lianke Valve     2022-08-12
The sealing ring of metal hard sealing butterfly valve is usually made of stainless steel, which has strong corrosion resistance. At the same time, the sealing structure of the eccentric metal allows it to avoid the impact of the sealing surface in daily operation. In addition, the densification performance is also well guaranteed. Its sealing pair is generally composed of relatively hard materials, such as metal, stainless steel and cast iron. That's one reason why it's called a hard seal. However, compared with the soft sealing butterfly valve, although this structure can be better applied in various high temperature and high pressure environments, its sealing performance is also partially affected. Electric hard-sealed butterfly valve is also a classification of hard-sealed butterfly valve. The difference between the two is only the driving force, and the structure is roughly the same. Most of their elastic structures are composed of multiple components such as valve body and valve disc. When purchasing a hard-sealed butterfly valve, it must be selected according to the actual operating environment.
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