The extended three-piece welded ball valve is widely used in various fields, and its quality and performance stability are not achieved by ordinary cast steel ball valves. The service life of welded ball valves is far greater than that of cast steel ball valves. The extended welded ball valves are widely used in urban gas, urban heating, petrochemical, shipbuilding, steel, pressure regulating stations, power plants and other types of pipeline equipment.

High platform ball valve is a relatively new type of ball valve, it has some advantages unique to its own structure, such as frictionless switch, seal is not easy to wear, opening and closing moment is small. In this way, the specification of the actuator can be reduced. With multi - rotation electric actuator, the medium can be adjusted and cut off. Widely used in petroleum, chemical industry, urban water supply and drainage requirements of strict cut off conditions.