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How to Deal with the Internal Leakage of Fire Valve

     Fire valve is an important accessory of industrial and building pipeline control. The main control precision of the product is high, especially in the flow control of a valve. At present, widely used in industrial control systems, in the process of use, there are usually various problems to bother us. Today's edition mainly tells you about the causes and treatment methods of fire valve leakage.
     1. From the analysis of the causes and solutions of the problems, it is likely that the internal leakage of the electric regulator will occur due to the influence of the process when the maintenance personnel are working or assembling. At this time, it is mainly due to the action of the comparative fixed limit switch, and the constant scouring and mode of the regulator during the operation of the control medium, which will lead to the internal leakage due to the failure of the valve to close. Phenomenon. Therefore, we should adjust the position of limit switch to solve this problem.
     2. The improper debugging of fire valve results in internal leakage. Due to the failure of the control part of the electric control valve, the valve limit switch, overtorque switch and other reasons lead to the wear or corrosion of the sealing surface, which will also cause internal leakage. We should still make great efforts to adjust the limit switch.
     3. Because the zero setting of electric actuator is inaccurate, this is the reason that the valve can not be completely closed and internal leakage occurs. The main adjustment method is to close the valve manually, or to turn back half circle after unscrewing the valve manually, which can adjust the adjustment limit.
     4. The valve is a push-down closing type. If the thrust of the actuator is not large enough, the valve will not be able to close completely and internal leakage will occur. The main solution is to replace the executing mechanism with greater thrust.