3、 When the cryogenic liquid passes through the throttling element, with the change of pressure, vaporization and bubble extrusion may occur, which will cause great damage to the valve. For valves with this phenomenon, special consideration should be given to the structure of the valve and the material of the valve core internals. For flashing phenomenon, hard alloy (such as stelled) should be used as the valve core material. For cavitation phenomenon, the valve core should adopt a stepwise pressure reduction structure (such as cavitation cage structure) to eliminate cavitation.

Correct selection of pneumatic butterfly valve length
When selecting stainless steel hose, consider the length of the pneumatic butterfly valve. Do not underestimate the determination and selection of the length of the pneumatic butterfly valve. In practice, if the pneumatic butterfly valve as a compensator is too long, it will be unstable; The pneumatic butterfly valve used at the pump inlet and outlet is too long, which will cause additional vibration. Therefore, it is important to confirm the optimal length of the stainless steel pneumatic butterfly valve according to the practice
As a compensator, the length of the pneumatic butterfly valve depends on the size of the path. In order to eliminate vibration and noise, the inlet and outlet nozzles of the pump are used. The length depends on the size of the path. The length of the angular displacement pneumatic butterfly valve depends on the practical bending radius and displacement angle
The length of transverse displacement pneumatic butterfly valve depends on the practical bending radius and transverse displacement. In bending, the length of the pneumatic butterfly valve parallel to the longitudinal section depends on the practical bending radius and longitudinal movement. In bending, the length of the pneumatic butterfly valve moving along the degree of parallel section depends on the practical bending radius and transverse movement
The pneumatic butterfly valve used as compensator is too long. The pneumatic butterfly valve at the pump inlet and outlet is too long, which will cause additional vibration. The pneumatic butterfly valve used in the pipeline system is too long, which will cause greater fluid resistance