The pneumatic ball valve is installed between the upper and lower valve stems. When the ball is closed, the valve seat spring pushes the valve seat to compress the ball, and the force on the spherical area formed by the outer diameter of the valve seat sealing surface and the spherical sealing line seals the pneumatic ball valve. The reliability of sealing depends to a large extent on the ratio of pMP to Dm. If the ratio of the sealing surface and the contact surface area with the spherical surface is not large enough, the pneumatic ball valve will not be able to ensure reliable sealing, otherwise it will cause overload of the valve seat and seal ring, which will increase the opening and closing torque of the valve and accelerate the wear and tear.

Request in stainless steel pneumatic butterfly valve device
1. In the installation process of stainless steel pneumatic butterfly valve, its length can be properly adjusted with the help of pull rod tools according to practical needs, and the adjustment amount shall not exceed the regular value during the adjustment process.
2. In the device, if it stops at the welding process stage, we should take certain measures to stop effective maintenance of the pneumatic butterfly valve, so as to prevent the bellows from being damaged by welding slag to the greatest extent.
3. In the process of installation, the end of the soft joint of the stainless steel pneumatic butterfly valve away from the vibration source shall be stopped to be firmly and effectively fixed, so as to achieve the purpose of effectively absorbing vibration by the soft joint.