Reasons and Treatment Methods of Electric Control Valve Inner Leakage

Electric control valve is based on the control of high precision, especially in the flow control, but also in the installation of the structure has obvious advantages, but widely used in industrial control systems, or when we use the electric control valve, or to appear This kind of problem bothers us. Nowadays, the main reason is to explain the causes and treatment methods of electric leakage inside the electric control valve. From the analysis of the causes and solutions of the problems, the maintenance personnel have a good promotion. Electric control valve in the processing or assembly process has received more influence, are likely to cause leakage of the electric control valve, the main problem is the limit switch, mainly due to the limit switch action more fixed, the valve Control of media in the run-time on the regulating valve of the constant erosion and mode, it will lead to the valve closed and lead to internal leakage problems. The emergence of this problem is mainly to adjust the position of the limit switch, you can solve. There are other problems below: 1, regulating valve improper debugging led to internal leakage. 2, due to the electric control valve failure in the control section. Mainly because of the electric valve in the valve limit switches, torque switches and other over, because there is a certain introduction above. As a result of these problems will lead to the sealing surface wear or corrosion or corrosion: mainly in the emergence of trachoma scratches, which is caused by a problem of internal leakage. The emergence of such problems is still mainly in the adjustment efforts. 3, due to the zero setting of the electric actuator is not accurate, this is the result of the valve can not be fully closed. The main method of adjustment: manually close the valve, or manually turn off the valve do not understand the screw in the back half circle, this to adjust the adjustment limit. 4, the valve is pushed down the closure type, if the actuator thrust is not big enough, it will lead to the valve can not be fully closed, which is one of the main problems of internal leakage. The solution: replace the thrust of the implementing agencies, or the balance of spool to reduce the media unbalanced force.