ZHEJIANG COTECH VALVE CO., LTD was establishedin 2005,located in the hometown of oversea Chinese Qingtian Lishui City, Zhejiang province, which is a vigorously innovative check valve specialist.Our company comprises a well-equipped CNC machine workshop with full design, manufacture, inspection and test facilities. Through theconstant development last decade, we have been well-known as wafer check valve market leader in China and abroad.

We have set up perfect quality management and acquired ISO 9001 certificate issued by LR (Lloyd’s Register of Shipping), CE/PED certificate issued by LR, API594&API6D certificate issued by American Petroleum Institute, and Special Equipment Manufacture License issued by Zhejiang Provincial Administration of Quality and Technology Supervision, and we also have obtained several national invention patents on valve design and appearance.

We provide high performance check valves for petroleum, chemical engineering, metallurgy, light industry, power station, water supply system, oil transportation, natural gas and long distance transportation pipe projects. We mainly supply 5 sorts of standard and non-standard products, which the diameter range from DN15 to DN2200(1/2＂-88＂), nominal pressure ranges from 1.6Mpa to 42.0Mpa(150Lb-2500Lb), and the operating temperature ranges from -196℃ to 750℃. Valve material contains carbon steel, stainless steel, alloy steel, Monel, bronze and other special alloy material. Based on the excellent sales network domestic and abroad, we have internationally exported our products to all over 30 countries and regions. We win enviable reputation with our steady quality, timely delivery, competitive price and prefect service. 

“Scientific management, strict discipline, continuous improvement, never feeling satisfied, customer satisfication, strive to create first-class enterprise” is not only the everlasting pursuit of Cotech, but also the sincere commitment to quality and service for wide range of end-users.