Pneumatic switch ball valve is a relatively new type of ball valve. Now this new type of product is also widely used in all walks of life. However, in order to better use this product, we must pay attention to some precautions in use, especially the detailed inspection before installation, Because a little carelessness will cause some minor faults in the product work, thus affecting the long-term use of the product. 　　

The fluid resistance is small. The pneumatic butterfly valve with medium and large caliber has a large flow area when it is fully opened. It is quick and labor-saving to open and close. The opening and closing can be completed by rotating the disc wrench 90 degrees. Because the medium force of disc wrench on both sides of the rotating shaft is close to the same, and the torque direction is opposite, the opening and closing torque is small, and excellent sealing can be achieved under low pressure. The sealing materials of the disc valve include nitrile rubber and fluororubber, The edible rubber is lined with tetrafluoroethylene, so the sealing function is outstanding. The hard sealing butterfly valve is a soft and hard laminated metal plate, which has the advantages of hard metal sealing and elastic sealing. It has excellent sealing function no matter in low temperature.