2 Cause analysis: Due to the large working pressure difference, a guide sleeve is installed in the valve and goes deep into the valve body. When the valve stem deviates to one side under the action of fluid imbalance force, the eccentric contact between the guide part of the valve stem and the guide sleeve is formed, resulting in eccentric wear of the guide sleeve. When the gap between one side increases, the guide gap will lose its guiding effect when it reaches a certain degree, The valve core vibrates in the guide sleeve, and the frequent oscillation makes the pin reach the fatigue strength of the material, and the two pins break. During the maintenance, the valve core and valve rod were found to fall off.

The introduction of these two aspects is enough to let you understand the pneumatic control valve, and let you use it better in the process of use, and ultimately will not affect your use of it. I believe we all know this very well! Because these basic knowledge are very important. The sealing performance of pneumatic butterfly valves with different relevant information is different. Only by following the rules can the installation of electric control valves be more smooth. How to purchase pneumatic control valves? The basic question is how to use the electric butterfly valve? How to maintain the electric butterfly valve in the forbidden area of overload? All aspects should be considered