1. Overview of the history of low temperature valve industry

Low temperature valve is a kind of small functional device used in industrial and urban construction, whose work is to control the activity state of the medium (liquid, gas, powder) in the pipe and equipment. Low temperature valve in the management of its role in the characteristics of the classification, cross industrial and civil universal low temperature valve can be divided into gate valve, globe valve, plug valve, ball valve, butterfly valve, diaphragm valve and so on. "China Low temperature valve industry Development situation and investment prospects Forecast report 2013-2017" issued by the view Research world pointed out that, The low-temperature valve industry in our country began to rise in the middle of the last century, because of the industrial construction and the needs of urban construction, the production scale of the low-temperature valve industry becomes large from small, and in practice and the introduction of foreign technology under the condition of practice and the introduction of foreign technology, from only simple more than 600 varieties to can produce main 12 categories of valves, more than 3000 models of the scale, to achieve the development and production of considerable progress.

2. Overview of the development status of low-temperature valve industry in China

China's low temperature valve industry after decades of development, has made great progress, the current low temperature valve industry products use its performance parameters range from vacuum valve to 600 MPa ultra high pressure valve, temperature from cryogenic -196℃ to high temperature 570℃. The medium used is water, steam, urea, ethylene, explosive and other media. Valves are low margin products and the market is very competitive. Valves are widely used in the water treatment industry, mainly in low-pressure valve products, such as butterfly valve, gate valve and check valve. It is understood that there are more than 2000 valve enterprises with a certain scale on the market, most of which are distributed in Jiangsu and Zhejiang and the Central Plains.

3. Relationship between the development of low temperature valve industry and the development of related industries

The cryogenic valve industry gets rapid development because of the needs of industrial construction and urban infrastructure construction, enough to see the important position of the cryogenic valve industry in the economic structure of our country. Cryogenic valves industry the main market in China focus on large pipelines, nuclear and chemical, oil, water, electricity, coal, metallurgy, paper making, medicine and other fields, a small valve may determine the 33 operation safety of an oil field or a surgical success rate, so it can be said that the valve industry for the development of other related industry development and production safety The guarantee of basic materials is an important factor for achievements in industry, urban construction, medical and health care and other industries.