2、 Good quality and long service life The quality of the pneumatic high-pressure ball valve is excellent. Although it is often in working condition, the pneumatic high-pressure ball valve will not be easily worn or eroded. The functions such as being not easy to damage are related to the structure of the ball valve, but also to the usual maintenance. If the pneumatic high-pressure ball valve is well protected, it can provide guarantee for the pneumatic high-pressure ball valve. A good product quality will lead to more love. After all, when choosing a product, most of the time we first look at the quality of the product. Good quality will satisfy customers, and satisfied products will retain customers. 　　

(2) Metal hard seal butterfly valve. The sealing pair is composed of metal hard data and metal hard data. Classification by sealing method
(1) Forced sealing butterfly valve
1) Resilient sealing butterfly valve. When the sealing pressure is closed by the valve, the valve plate kneads the valve seat, and the elasticity of the valve seat or valve plate occurs
2) Applied torque sealed butterfly valve. The sealing specific pressure is generated by the torque applied to the valve shaft
(2) Pressurized and sealed butterfly valve. The sealing specific pressure is generated by the charging of the elastic sealing element on the valve seat or valve plate
(3) Active sealing butterfly valve. The sealing specific pressure is actively generated by the medium pressure.