3、 The popularity is high, and the reputation of commenting on good products is always an important criterion we pay attention to. Although everyone has different comments on the product, when many people comment on the product, it will reflect whether the product is really good. The pneumatic high-pressure ball valve has a good reputation in the market. Many people think that this product is worth buying and have a high evaluation of it. The products with high evaluation and good reputation will attract people, which will increase the sales of products. 　　

The structure of the connecting rod butterfly valve is shown in Figure 1. It is mainly composed of driving device, flange valve plate, valve body, main shaft, rod system and other parts. The opening and closing of the valve depends on the driving device to drive the spindle to drive the linkage mechanism to move, thus realizing the opening and closing of the valve plate. It can be seen from Figure 1 that no matter when the valve is opened or closed, the valve plate and its connecting parts are always surrounded by the medium. When the valve is closed, the valve plate shall bear all the pressure of the medium, which will cause the plastic deformation of the valve plate, thus causing the deformation of its connecting parts; When the valve is opened, the valve plate will be washed by the medium, and the vibration of the valve plate itself caused by the pipe joint and the medium flow will also speed up the damage of the connecting parts, especially the damage of the solid self-lubricating bearing at the hinge. Therefore, the service life of the connecting rod butterfly valve plate is also the service life of the connecting rod butterfly valve.