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KOSEN provides a full range of high-performance valve products including Ball Valves, Check Valves, Gate Valves, Globe Valves, and Butterfly Valves, ensuring safe and efficient operation across diverse industrial applications.
A leading valve manufacturer based in Oubei, Zhejiang, China, KOSEN specializes in engineering and producing high-quality industrial valves for critical applications worldwide.
With over a decade of experience, KOSEN Valve Co., Ltd. has established itself as a reliable supplier and manufacturer of industrial valves. We are not only a supplier but also a full-fledged manufacturer, ensuring complete control over quality and performance.
Our products include Ball, Gate, Globe, Check, Plug, Butterfly Valves, and Pipe Strainers. Materials range from carbon steel and stainless steel to duplex steel, Hastelloy C, Monel, and high-nickel alloys. Valve sizes span from 1/2 inch to 40 inches, with pressure ratings from Class 150 to 2500 LB and temperature capabilities from -196°C to 570°C.
KOSEN manufactures a comprehensive range of industrial valves designed for high performance, durability, and reliability in extreme conditions.
Available in aluminum bronze, stainless steel; sizes 1/2" to 24"; pressure up to 600 LB.
Wedge or flexible design; ASTM A217 C12A; PN10-PN100; DN50-DN1000.
Engineered for -196°C; tested under stringent standards; ideal for LNG and air separation.
Zero leakage design; metal seated; high cycle life; suitable for high temp/pressure.
Prevents backflow; available in wafer and flanged types; carbon/stainless steel.
Zero fugitive emissions; bellow seal design; ideal for toxic or hazardous media.
For slurry, viscous, and abrasive media; pneumatic or manual actuation.
Overpressure protection; ASME certified; available in spring-loaded and pilot-operated.
Every valve undergoes strict in-process inspections and final pressure testing to meet international standards including ISO, API, and ASME.
From carbon steel to stainless, duplex, Monel, Hastelloy C, and high-nickel alloys for corrosive and high-temperature environments.
Trusted in oil & gas, LNG, nuclear power, mining, chemical, water treatment, and aerospace industries worldwide.
KOSEN valves are engineered for performance in the most demanding environments.
Reliable isolation and control in upstream, midstream, and downstream operations including E&P, refining, and petrochemicals.
Cryogenic ball and gate valves tested to -196°C for liquefied natural gas, air separation, and cold box applications.
High-pressure and high-temperature globe, gate, and check valves for steam and feedwater systems.
Corrosion-resistant materials like Hastelloy and Monel for aggressive chemical environments.
Durable butterfly, knife gate, and check valves for municipal and industrial water systems.
Abrasion-resistant knife gate valves for handling slurry, tailings, and mineral processing.
KOSEN valves are available in carbon steel, stainless steel (304, 316, etc.), duplex, super duplex, Monel, Hastelloy C, and high-nickel alloys.
Our valves range from 1/2 inch (DN15) up to 40 inches (DN1000), depending on the type and application.
Yes, we specialize in cryogenic ball and gate valves designed for temperatures as low as -196°C, ideal for LNG and air separation plants.
Yes, KOSEN holds ISO 9001 and CE certifications. Our valves comply with API, ASME, ANSI, DIN, and other international standards.
We serve oil & gas, LNG, power generation, chemical, mining, water treatment, nuclear, and aerospace industries globally.
We welcome inquiries and custom requirements. Get in touch with us today.
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