Internal structure of pneumatic butterfly valve:
1. Elastic seat sealing structure The elastic seat sealing structure uses an eccentric butterfly plate installed on the valve rod, which has two sides: spherical and conical, and is matched with the elastic seal ring. The seal ring is made of L-shaped and U-shaped, which is consistent with the sealing surface of the butterfly plate. Under the action of medium pressure, the sealing pair produces tiny elastic deformation, thus realizing sealing. The structural form shall be selected according to the nominal diameter and nominal pressure of the valve, and the wall thickness of the seal ring shall be designed according to the pressure bearing force.

What force range does the pneumatic butterfly valve have
It is an important part of modern industry. Pneumatic butterfly valve is used as wire and cable maintenance pipe and civil shower hose for wires, cables and automatic instrument signals, with specifications ranging from 3mm to 150mm. The small diameter pneumatic butterfly valve (inner diameter 3mm - 25mm) is mainly used for the maintenance of the sensing line of the fine optical ruler and the industrial sensor line. Pneumatic butterfly valve products include oil conveying and suction hose, steam hose, sand blasting hose, acid and alkali conveying and suction hose, food hose, oxygen blowing hose and various profiled hose, etc. What is its stress range? Next, I will analyze it for you.
The pressure range of pressure resistance is: the pressure range of hose is generally PN0.6 - 32.0Mpa. Up to 42.0MPa. The pneumatic butterfly valve for pump is the main pressure bearing part of the hose device in the pressure pipeline, and also acts as a sheath for the bellows. According to the pressure in the pipeline and the application site, one or more layers of stainless steel wires or steel strips can be selected to stop weaving.