NSEN profile

NSEN established in 1983, is a scientific and technological enterprise specially manufacturing metal to metal seal butterfly valves and integrating valve development, production, sales and service.

Over 30 years experience, NSEN has built a stable team of high quality talents, of them more than 20 technicians of senior and semi-senior titles have been engaging in the valve scientific research all the year round, so as to ensure the product technology to be continually innovated and the quality to be one-up. We hold advanced production and detection equipment, such as machining center, large vertical  lathes, numerical control machine tools, 

GOST, ANSI, API, BS, GB standards are executed for the products, thus making them available with excellent controlling and sealing performance, broadly used for nuclear power, petroleum, chemical industry, electric power, metallurgy, ship-making, heating, water supply and drainage etc. fields and have kept a good working achievement for years.

NSEN can provide several kinds of optimized allocation for the material and the sealing structure in accordance with the working condition requirement in the actual use of the product so as to meet with 

the different needs of the clients on the product performance and, in order to make sure of both product and service quality, has set up a perfect quality control system and been accredited, early or late, to TS (grade A), ISO9001 approvals. 

Looking forward to the future, NSEN Valve will uphold to take as heretofore "quality, velocity, innovation" as the core cultural concept of enterprise, make sure the product technology be in front, promote the enterprise innovation, constitute the enterprise core competitive force and continually create new achievement so as to provide the users with reliable products and services.

boring machines, milling machines etc. Establish the lab for material chemical composition analyzing and mechanical property as well as UT, MT, PT testing. 

Valves of "NSEN" brand have long enjoyed a good reputation in the industry, hold a high scientific content and have been awarded with tens of national patents, of which the "Bi-directional metal to metal seal butterfly valve" awarded with the national invention patent, it make two way sealing "zero" leakage realized under 160kgf/cm2 high pressure and features without lowering the working efficient under 600℃ High temperature, filling up the national gap and creating the high quality valve on the market, so it was listed in the directory of China national-class key new products in 2002.