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    Home > Active Ingredient News > Drugs Articles > Development history of regulating valve

    Development history of regulating valve

    • Last Update: 2009-04-06
    • Source: Internet
    • Author: User
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    Since the beginning of the 20th century, the development of the control valve has a history of seven or eighty years There have been ten categories of control valve products, self operated valves and positioners The development process is as follows: the 1920s: the original control valve for stable pressure came out 1930s: with the "V" type gap of double seat valve and single seat valve as the representative products In the 1940s, positioners appeared, new types of control valves were further developed, such as diaphragm valve, pneumatic angle seat valve, butterfly valve, ball valve, etc In the 1950s, ball valves were widely used and three-way valves replaced two single seat valves 1960s: there are complete series of products in China Now we are still using a large number of single seat valve, double seat valve, angle seat valve, three-way valve, diaphragm valve, butterfly valve, ball valve seven products are still the level of products in the 1960s At this time, foreign countries began to launch the eighth structure of regulating valve - sleeve valve 1970s: another new structure of the product - eccentric rotary valve came out (the ninth structure of the regulating valve varieties) In this period, sleeve valve is widely used in foreign countries In the late 1970s, the domestic joint design of sleeve valve made China have its own sleeve valve product series 1980s: in the early 1980s, due to the reform and opening up, China successfully introduced petrochemical equipment and control valve technology, which promoted the use of sleeve valve and eccentric rotary valve, especially sleeve valve, which has the potential to replace single and double seat valves, and its use is more and more extensive At the end of 1980s, another important development of control valve was CV3000 and fine and small control valve in Japan In terms of structure, they changed the pneumatic diaphragm actuator of single spring into multi spring diaphragm actuator The structure of valve was only improved, not changed Its outstanding feature is to reduce the weight and height of the regulating valve by 30% and increase the flow coefficient by 30% 90's: the focus of 90's is to tackle, improve and improve the reliability and special difficult products By the end of the 1990s, the 10th structure product, full-function ultra light valve, was launched Its outstanding feature is the breakthrough in reliability, function and weight A breakthrough in function - * a product with full functions Therefore, one product can replace many products with incomplete functions, simplifying model selection, use and variety
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