Overload of an electric valve refers to a situation where the torque demand encountered by the electric valve during operation exceeds its design capacity. This situation can be caused by various factors, such as low power supply voltage, improper torque limiting mechanism settings, and excessively high ambient temperature. Electric valves may encounter overload situations during operation, which not only affects their performance but may also lead to safety accidents.

The sealing performance of a valve directly affects the control effect of the fluid medium and the safe operation of the system. Grinding the valve sealing surface is one of the important means to ensure its sealing performance. Its main purpose is to eliminate unevenness, defects, and particles on the sealing surface, improve the surface smoothness and roughness, and thus achieve optimal sealing performance. After grinding, the valve sealing surface can typically achieve a dimensional accuracy of 0.001~0.003mm, a geometric accuracy (such as unevenness) of 0.001mm, and a surface roughness of 0.1~0.008.

The side-mounted ultra-low temperature online maintainable ball valve is designed by Teji Valve Group by combining the advantages of three-piece ball valves and top-mounted ball valves. Its structure is novel and unique, easy to install, and allows for online maintenance. The valve’s design and production are not limited by structure and can be designed according to user pipeline requirements into a single-piston (DBB) structure, single and double-piston (DIB-2) structure, or double-piston (DIB-1) structure.