The applicability of the electric American standard flanged ball valve is more extensive than that of the pneumatic ball valve, so there are relatively more users who report the failure of the valve. The following is an introduction to the two American standard electric flanged ball valves of a certain factory in operation. failure, and to introduce the reasons for this failure.

    The two faults are that the action of limit switch 1 and limit switch 2 are not synchronized, and the second is that limit switch 2 is burned out. After the disassembly and maintenance of the valve body, the editor found that there are three main reasons for these two problems:

    1. There is a certain error in the cooperation between the limit switch through-core screw hole and the fixed screw.

    2. The contact rod and fixed screw of the limit switch are bent and deformed after being pushed by the rotating shaft connector for many times.

    3. The limit switch 2 has a long action time and poor arc extinguishing ability, and it is easy to be burned by the arc when the running current of the drive motor is cut off.

    Now that the reason is known, the solution is relatively easy. For example, the limit switches of the control part of the electric American standard flanged ball valve are reduced from the original two to one, and then the control circuit can be adjusted locally.

    The above is the analysis of the failure causes and simple solutions in the operation of the electric American standard flanged ball valve for your reference.