US conval Kangwo Conval valve located Samo Falls City, the northeastern US state of health, was formally established in 1967, the production of valves has been nearly 40 years of history, its main products are high temperature, high pressure valves, non-return valves, valve and valve products are mainly applied to more than 300,000 MW steam turbine and hydrophobic and related applications of supercritical units in power plants and the petrochemical industry has been widely used, in line with ISO9001 quality standard and nuclear applications. In 1962 the company's founder, Mr. Thelwall Conval complete the overall design of innovative high-pressure forged valves, when the first electron beam welding is used in the valve industry, United Technologies Corporation, the technical director of the company, later Conval founder Mr. Thelwall, the first generation of clamp-type valve market in 1964 by United Technologies Corporation, with a sharp rise in demand for space, time, United Technologies Corporation decided to give up its civilian industrial products, in this case Mr. Thelwall become legal successor clamp valve technology and set up now Conval company in 1967. The early 1980s, as was the Westinghouse valve supporting manufacturers to enter the Chinese market, although it was acquired by Siemens Westinghouse, but still Conval company Siemens valves as their preferred supporting manufacturers. Through nearly 40 years of unremitting efforts, Conval company has gradually become the world's leading manufacturer of professional high-pressure forged valves, the same as China's reform and opening up and rapid economic development, Conval products in China has been widely used, especially in the more than 300,000 megawatts and supercritical steam turbine units have been hydrophobic applications users, has been more than 90 power plants in different forms using Conval valve, and in the process, established in Shanghai Convo valve aftermarket company, has overall responsibility for China region Convo valve service issues. Conval company's main products for clamp type valve and metal ball, of course, the company also produces Conval valve, high pressure process valves and so on.