Control valve, also known as control valve, is a key device for regulating medium flow, pressure, temperature, liquid level and other parameters in industrial automation process control, which is widely used in chemical, electric power, metallurgy and other fields [1]. It automatically adjusts the opening by receiving control system signals, achieving precise control of process parameters. 
The device consists of an actuator and a valve body, and the driving methods include pneumatic diaphragm type, cylinder type, etc. Special working conditions give rise to specialized types such as fluorine lined and self operated. In the 1930s, V-shaped notch valves appeared, and in the 1940s, positioners were introduced and butterfly valves and ball valves were expanded; In the 1960s, China completed standardization of single seat valves, double seat valves, etc. In the 1990s, fully functional ultra light valves achieved lightweighting, reducing weight by more than 70%. Modern products have formed ten major categories of systems, covering basic control to complex working scenarios. The actuator has both positive and negative action modes, and the valve control characteristics are divided into air open and air closed, adapting to different engineering parameter requirements. 
In the 1960s, it was only after a series of improved designs, standardization, and normalization of the above-mentioned products in China that a complete series of products were developed. The seven products we still use in large quantities, including single seat valves, double seat valves, angle valves, three-way valves, diaphragm valves, butterfly valves, and ball valves, are still at the level of the 1960s. At this time, foreign countries began to introduce the eighth type of structural regulating valve - sleeve valve. 
In the 1970s, another new structure of product - eccentric rotary valve was introduced (the ninth category of regulating valve varieties). During this period, sleeve valves were widely used abroad. In the late 1970s, China jointly designed sleeve valves, giving China its own series of sleeve valve products. 
In the 1980s, during the reform and opening up period, China successfully introduced petrochemical equipment and regulating valve technology, which promoted the use of sleeve valves and eccentric rotary valves, especially sleeve valves, which had the potential to replace single and double seat valves and became increasingly widely used. In the late 1980s, another major development in regulating valves was Japan's Cv3000 and compact regulating valves. In terms of structure, they changed the single spring pneumatic diaphragm actuator to a multi spring diaphragm actuator, and the valve structure was only improved, not changed. Its prominent feature is to reduce the weight and height of the regulating valve by 30%, and increase the flow coefficient by 30%.