Application and characteristics of large diameter forged steel pneumatic ball valve the quality and performance of the valve body directly affect the service life and safety of the valve. Therefore, forged valve body shall be used in case of poor working environment or high requirements for safety. For gate valves, globe valves, check valves, etc. below DN50, most of them in China adopt the process of welding flanges at both ends after integral forging, and some manufacturers forge flanges together. For the valve body with a large diameter of more than 2 inches, due to the lack of heavy multi-directional forging equipment required for forging, it is still difficult to realize the large-scale integral forging parts made in China. Therefore, many manufacturers import large valve body forgings from abroad, or cooperate with some foreign enterprises to develop and use forged and welded valve body parts.

3. The intelligent controller is used for control to achieve the minimum optimization of the control process, reduce the number of motor starts and stops and reduce valve wear. The main performance is that the built-in intelligent control module is an adaptive multi-functional controller, that is, the action process is always self adaptive with the control signal and valve position feedback, which can ensure the minimum number of starts and stops to achieve the maximum control accuracy, Therefore, the control process can be optimized. It can also reduce the wear of valves due to the reduction of start and stop times. In addition, the setting of forward and reverse action interval can effectively avoid unnecessary vibration caused by interfering signals on the valve.