Metal shock absorbers actually include many types of shock absorbers. What's the specific reason? (ZTE type damping ball valve damper) In reality, in the shock absorber industry, many people will directly refer to the ball valve damper as a metal shock absorber. In fact, it can also be said that, because today most metal shock absorbers are ball valve based structural design, but their shape will change in some different environments, Therefore, the title will be modified not to be called ball valve damper, but the ball valve used for a pneumatic butterfly valve of a certain damper ball valve should meet those requirements: the ball valve should meet the following conditions: the radius of the ball valve should be greater than four times its zero point under the rated load;