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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.
A centre‑pivoted butterfly valve features a disc mounted on a central axis, providing balanced flow control. It is suitable for moderate-pressure pipelines requiring reliable shut-off, compact design, and cost-effective maintenance.
Balanced Disc Design
Central pivot evenly distributes pressure, reducing uneven wear and ensuring stable operation.
Low Torque
The pivoted disc minimizes resistance during rotation, allowing easy manual or automated actuation.
Compact and Lightweight
Reduced face-to-face length and simple design save installation space and piping support.
Water Treatment & Distribution
Pipeline isolation and flow control
HVAC Systems
Heating, cooling, and utility service lines
General Industry
Air, water, light oil systems
Chemical Processing (Non-abrasive)
Handling neutral and mildly corrosive fluids
Marine & Shipbuilding
Compact, corrosion resistant valves for ballast and bilge systems
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Customization Item |
Options |
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Body Material |
Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel, Titanium |
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Disc Material |
Stainless Steel, Aluminum Bronze, Coated Ductile Iron |
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Seat Type |
EPDM, Buna-N, Viton, Teflon, Metal |
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Connection Type |
Wafer, Lug, Flanged |
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Size |
DN50–DN1200 (2"–48") |
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Actuator |
Manual, Electric, Pneumatic |
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Special Features |
Coating, Fire-Safe, High-Temperature Seats |
As one of the most professional centre-pivoted butterfly valve manufacturers and suppliers in China, we offer a wide range of valves with superior quality. Please feel free to wholesale high quality centre-pivoted butterfly valve at competitive price from our factory. We also accept customized orders.
Cast Steel Wafer Type Butterfly Valve, Rubber Lining Wafer Type Butterfly Valve, Center Line Butterfly Valve(0/10)
