HONGON: Your Premier Manufacturer of High-Performance Flange Butterfly Valves

 When your project demands a valve that can handle high pressure, provide a permanent connection, and fit seamlessly into an existing flange system, there is no substitute for a quality flange butterfly valve. HONGON (Shanghai Hongon Machinery Technology Co., Ltd.)​ is a leading flange butterfly valve manufacturer​ based in Shanghai, China, serving the global market since 2007.

We understand that the integrity of your piping system depends on the quality of its components. That’s why we have built our manufacturing process around the principles of "Quality is fundamental, technology seeks development."

⚙️ Engineered for Strength and Reliability

The primary distinction of a flange butterfly valve​ is its ability to be installed as a standalone unit between pipes. HONGON has refined this design to maximize its benefits:
  • Heavy-Duty Design:​ Unlike lighter wafer valves, our flanged valves are built with substantial body mass to resist deformation under high bolt loads and line pressure.
  • Versatile Sealing Options:​ We offer both soft-seated​ versions for general service (water, air, gas) and hard-seated (metal-seated)​ versions for abrasive or high-temperature media (steam, oil).
  • Face-to-Face Dimensions:​ Our valves are manufactured to strict standards (API 609, ASME B16.10) to ensure they fit perfectly between standard ASME/ANSI or DIN flanges.
  • Actuation Ready:​ Designed for easy mounting of gear operators, electric actuators, or pneumatic actuators​ via an ISO 5211 mounting pad.

🏭 From Our Factory to Your Facility

HONGON is not a trader; we are a factory-direct manufacturer. This means:
  • Complete Quality Control:​ From casting inspection to final hydro-testing, every step is managed in-house.
  • Customization (OEM/ODM):​ Need a specific flange drilling pattern (ASME B16.5, EN 1092), a special alloy, or a fire-safe design? We can build it.
  • Certified Reliability:​ Our products are backed by ISO, SGS, and FAMI‑QS certifications​ and over 20 technical patents.

🛠️ Product Specifications at a Glance

Feature
Specification
Product Type​
Flange Butterfly Valve
Size Range​
2" to 80" (DN50 to DN2000)
Pressure Rating​
Class 150 to Class 300 (PN10 to PN40)
Body Material​
Ductile Iron, Carbon Steel, Stainless Steel
Seat Material​
EPDM, NBR, PTFE, Metal Seated
End Connection​
Flanged (RF, FF)

🤝 Partner with a Global Leader

We supply flange butterfly valves to clients in the waterworks, energy, and process industries worldwide. When you choose HONGON, you choose a partner dedicated to your project's success.
🔗 Contact our experts to configure your flange butterfly valve:​
👉 https://www.hongonvalve.com
👉 https://www.hongonvalve.com/shop/

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