The original butterfly valve is a simple and loosely closed flapper valve, which is usually used as a flow regulating valve and damping valve in the water pipeline system.

Why pneumatic butterfly valve should be made of stainless steel
The stainless steel pneumatic butterfly valve with flange becomes a flanged stainless steel pneumatic butterfly valve. The material of the matching flange is usually the same as that of the stainless steel pneumatic butterfly valve, such as 301, 304, 304L, 316, 316L, etc.
(1) Size: nominal diameter of hose, selection of connector type (mainly flange connection, threaded connection, quick connector connection), size of pneumatic butterfly valve, and hose length.
(2) The pressure shall be based on the actual working pressure of the hose, and then the nominal diameter and pressure gauge of the corrugated pneumatic butterfly valve shall be inquired to determine whether to use the pneumatic butterfly valve of stainless steel mesh sleeve type.
(3) The chemical properties of the medium conveyed in the medium hose determine the material of each part of the hose according to the corrosion resistance of the hose material.
(4) The working temperature and range of the medium in the temperature hose; Ambient temperature when the hose is working. In case of high temperature, the pressure after temperature correction shall be determined according to the temperature correction coefficient of working pressure under high temperature of pneumatic butterfly valve to determine the correct pressure level.
(5) The status is based on the status of the hose in use, referring to the correct use and installation method of the pneumatic butterfly valve and the optimal length of the hose for settlement compensation, the length calculation of the hose in various motion states, the minimum bending times and minimum bending radius of the hose, and other factors. The parameters correctly select the hose length and install it correctly.