History of valve

The valve is produced with the flow of the fluid pipe. Human use of the valve has been nearly 4000 years of history. Chinese ancient salt brine from salt in absorption, once in the bamboo pipe used in cork valve. In the 1800 BC, the ancient Egyptians used similar wooden plug to control the flow of water in order to prevent the Nile flood. These are the valve prototype. Industrial use of the valve is a large number of applications, from the beginning of the invention of the steam engine Watt. At the beginning of twentieth Century has cast iron, cast steel, forged steel, stainless steel, chrome molybdenum steel, brass and other materials in the valve. Application in various industries, various conditions. The earliest introduction of foreign valve production technology company is not much, after the introduction of foreign production technology, making the domestic valve production technology breakthrough, the quality of the increase, the longevity of the extension.
According to the "2013 China valve industry competition development bottleneck" in the show: with the valve industry to accelerate the pace of restructuring, the industry will be the valve product quality safety and product brand competition between products to high technology, high parameters, high resistance to corrosion, high life direction, only through continuous technological innovation, development of new products, technological transformation, to gradually improve product technology level, to meet domestic equipment supporting, the full realization of the domestic valve. China's valve manufacturing industry in a huge demand environment, will show a better development prospects.
At present, China's valve market turnover of up to 50000000000 yuan, which fully shows the size and momentum of the development of the valve industry in china. But in the industry situation in a good background, there are some problems worthy of our concern, especially in China's valve business mainly in the low level, small scale, family business oriented enterprises. This is a great limitation and bottleneck for the future development of the valve industry in China.
At present, the domestic valve manufacturing enterprises have been able to ISO international standards, DIN German standard, AWWA American Standard and other international standards for design and manufacture of various valves, some manufacturers of products reached the international advanced level. Although the new year's overall level of the valve industry has been greatly improved, but the quality is still not stable enough, such as run, run, drip, leakage phenomenon in the domestic valve often occur.
In addition, the matching capacity of the valve with the developed countries, there is still a certain gap. Valve market competition is becoming increasingly fierce, some ordinary valve products market has been saturated, for more than a request, which makes the development of small and medium enterprises increasingly difficult. And even the high technology products in the international market is also very fierce competition.
Our country in the valve market, has been able to provide heating valve, environmental protection valve, construction valve, etc., more varieties.

（source:http://www.kg-machinery.com/news/history-of-valve.html）