5 Conclusion By improving the material composition and manufacturing process of GRP, the overall mechanical properties of GRP have been improved, and the shortcomings of brittleness of chopped GRP reinforced GRP have been overcome. According to the shell test, the glass fiber reinforced plastic pneumatic ball valve designed according to PN6 can be used safely under the working condition of PN25 at least. The application scope of the FRP pneumatic ball valve is widened, and the corrosion resistance of the FRP pneumatic ball valve is fully exerted.

How to choose the right pneumatic butterfly valve
No matter what kind of thing is suitable for me, it is always the best, and so is the time when the pneumatic butterfly valve is actually selected. Then I will introduce to you how important it is to select the appropriate pneumatic butterfly valve.
The standard nominal diameter of the hose tells us to select the connector type (mainly flange connection, thread connection, quick connector connection), the size of the pneumatic butterfly valve, and the length of the hose. The introduction of pressure demand is based on the theoretical operating pressure of the hose, and then the inquiry of the nominal diameter and pressure gauge of the corrugated pneumatic butterfly valve can determine whether the pneumatic butterfly valve of stainless steel mesh sleeve type can be used.
According to the chemical characteristics of the medium transported in the medium hose, we determine the raw materials of each part of the hose according to the anti-corrosion function of the hose raw materials. Operating temperature and range of medium in temperature hose; Ambient temperature during hose operation. In case of high temperature, it is necessary to confirm the pressure after temperature modification according to the operating pressure temperature modification coefficient under high temperature of pneumatic butterfly valve, so as to confirm that the correct pressure level is selected.
Refer to the correct application and installation method of pneumatic butterfly valve and the optimal length of high-pressure hose for settlement compensation. The length calculation of various movements of the hose, the minimum number of detours and the minimum radius of detours of the hose and other elements, the parameters correctly select the hose length and install it correctly.