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Founded in 2010 and headquartered in Anfeng Industrial Zone, Yongjia, Zhejiang, SUNAY has three manufacturing subsidiaries with a registered capital of 10.8 million RMB. Our products—including API 6D pipeline ball valves, gate, globe, check, plug valves, and API 609 butterfly valves- offer complete fluid control solutions for petrochemical, LNG, nuclear, marine, aerospace, and other industries.
Comprehensive Product Range
We offer 6 major valve types with 1,000+ specifications, including patented high-temperature, high-pressure, and particle-resistant valves.
Advanced Technology
Equipped with CAD design, 3D simulation, and professional testing platforms for continuous product optimization.
Strict Quality Management
International-standard production, ERP and SAP systems, and precision casting ensure reliable, standardized manufacturing.
Certified and Trusted
Holds ISO9001, ISO14001, ISO45001, CE, and AAA credit certifications; supplier to major national and international enterprises.
Butterfly valves are quarter-turn valves with a rotating disc that regulates fluid flow. They are compact, lightweight, and suitable for low to medium-pressure systems.
Bi-offset Butterfly Valve — Offset disc reduces seat wear and ensures reliable sealing for critical applications.
Centre-pivoted Butterfly Valve — Balanced disc design for cost-effective flow control in general industrial systems.
Compact Design
Slim and lightweight, easy to install in space-constrained pipelines.
Quick Operation
90° rotation enables fast open/close for rapid isolation.
Low Torque Requirement
Balanced or offset disc design minimizes operating effort and actuator size.
Water & Wastewater Treatment
Flow control and pipeline isolation
HVAC & Building Systems
Heating, cooling, and air flow management
Chemical & Petrochemical Plants
Non-abrasive chemical and utility pipelines
Power & Energy Systems
Steam, cooling water, and process fluid control
Marine & Industrial Pipelines
Ballast, bilge, and utility pipelines
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Option |
Customizable Content |
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Material |
Carbon steel, Stainless steel, Alloy steel |
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Size |
DN15–DN200 (larger available) |
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Pressure Rating |
Class 150–600 |
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Seat Type |
Soft / Metal |
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Actuation |
Manual, Electric, Pneumatic |
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Standards |
API, ANSI, DIN, JIS |
|
Special Features |
Fire-safe, Anti-static, Anti-blowout stem |
As one of the most professional butterfly valve manufacturers and suppliers in China, we offer a wide range of valves with superior quality. Please feel free to wholesale high quality butterfly valve at competitive price from our factory. We also accept customized orders.
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