Regulating valve growth since the early 20th century has been eighty years of history, has produced ten categories of Control Valve products, free-standing valves and positioners, control valves and control valve of the birth process is as follows: 20 Years: The original pressure regulator used to come out. 30 years: "V" type notch double seat valve and single-seat valve as the representative product V-type adjustment valve come out. 40 years: Appear locator, control valve new breed occurs further, there gap valve, angle valve, butterfly valve, ball valve and so on. 50 years: the ball valve to get more promotion and utilization, three-way valve instead of two single-seat valve into the system. 60 years: in the domestic product of the above series held a series of innovative plans and standardization, after the example, only a complete series of products at home. Now we are still making full use of single-seat valve, double seat valve, angle valve, three-way valve, gap valve, butterfly valve, ball valve seven products is still the degree of sixty years the product. At this time, foreign countries began to introduce the eighth layout regulator - sleeve valve. 70 years: another product of a new layout - the preference of rotary valve available (the ninth largest category of control valve layout). This temporary sleeve valve is widely used in the ocean. At the end of 1970, China Unite planned a sleeve valve that gave China its own series of sleeve valve products. 80 years: During the period of reform and opening up, China successfully introduced stone dressing devices and control valve skills to make sleeve valves favored rotary valves to promote the use, especially the sleeve valve, a great alternative to single, double seat valve potential , Its use is more and more widely. The end of 80 years, the control valve is another great hope that this day of the Cv3000 and small control valve, they are layout, the single spring pneumatic diaphragm actuator to multi-spring film actuator, the valve layout is only innovation, not change. Its outstanding feature is the control valve weight and height of 30%, the flow coefficient increased by 30%. 90 years: 90 years, the focus of the control valve is in reliability, special difficult product research, innovation and progress. By the end of 1990, Hualin Company launched the tenth layout of the product - full-featured ultra-light valve. Its salient features are breakthroughs in reliability, efficacy and weight. Efficacy of the breakthrough - the only full-featured products, therefore, can be replaced by a variety of products on the efficacy of a large number of less efficient, so that the selection of simplified, simplify the use of varieties to simplify; breakthrough in weight - than the leading single Seat valve, double seat valve, sleeve valve light 70 ~ 80% lighter than the fine valve 40 ~ 50%; reliability of the breakthrough - for the traditional control valve and other non-dependability factors, such as the reliability of the seal , The reliability of positioning, the reliability of operations and so on. The advent of this product, so that China's control valve technology and application reached the end of 90 years of ancestors; it is a huge breakthrough on the valve; in particular, is the electronic full-function ultra-light valve, will become the century-old control valve The mainstream.
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