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2025-03-12
What is a floating ball valve?
A floating ball valve is a valve in which the ball can float. Under the action of medium pressure, t...
The Flanged Butterfly Valve is a resilient-seated valve with double flanged ends, making it ideal for standard pipeline systems that require safe, fast installation and long-term durability. Suitable for on/off or throttling service, it’s widely used in water treatment, HVAC, fire protection, general industry, and low to medium pressure flow control systems.
Who Uses Flanged Butterfly Valves?
| User | User Profile | Key Priorities |
| Municipal Water Engineer | Builds or maintains urban water lines | Standard Flange Matching, Leak-Free Operation |
| HVAC System Designer | Controls chilled/hot water flow | Space Saving, Easy Actuation |
| Fire Safety Contractor | Installs and certifies fire protection loops | UL/FM Approval, Quick Response |
| Industrial OEM Buyer | Requires reliable valves for packaged systems | Economical, Stock-Ready, ISO Mounting |
Key Features & Benefits:
Double Flanged Ends (FF / RF)
Easy alignment and bolted connection to standard pipeline flanges.
Tight Shut-Off with Resilient Seat
Bidirectional sealing with options like EPDM, NBR, PTFE, or Viton.
Full 360° Disc Rotation
Suitable for throttling or full shut-off; low torque operation.
Actuator Mounting Ready (ISO 5211)
Compatible with manual gear, electric, or pneumatic actuators.
Bubble-Tight, Corrosion-Resistant Design
Ideal for water, air, gas, mild chemicals, and fire protection systems.
Technical Specifications
| Parameter | Specification |
| Size Range | 2” ~ 48” (DN50 ~ DN1200) |
| Pressure Rating | PN10 / PN16 / Class 150 |
| Body Materials | Ductile Iron, WCB, CF8, CF8M |
| Disc Materials | Ductile Iron, SS304, SS316, Nylon Coated, Aluminum Bronze |
| Seat Options | EPDM / NBR / PTFE / Viton / Silicone |
| Connection Standard | ANSI B16.5, DIN EN 1092-2, BS 4504, JIS B2220 |
| Operation Modes | Manual Lever / Gearbox / Pneumatic / Electric |
| Design Standards | API 609, EN 593, ISO 5752 |
| Testing | API 598, EN 12266 Leakage Class A/B, Seat & Shell Pressure Test |
Sample Product Code
AFV-CL600-F51-12IN-BW
(Axial Flow Check Valve, Class 600, Duplex Steel Body, 12 Inch, Butt Weld Ends)
Common Applications：
Water Treatment Plants – Flow control, isolation valves
HVAC & Building Utilities – Chilled/hot water, zone valves
Fire Protection Networks – Fire pump discharge, system zoning
Food & Beverage Processing – Non-toxic, FDA-approved materials available
Power & Utilities – Cooling water, auxiliary systems
General Industry – Compressed air, irrigation, light-duty chemicals
Why Choose Our Flanged Butterfly Valves?
Proven in Global Projects
Deployed in pipelines and plants across Europe, Southeast Asia, Middle East, and North America.
Customizable for Any Media
Including steam, seawater, hydrogen, cryogenic gas, and abrasive slurries.
Full Documentation Support
Includes MTC, FAT, ITP, NDT reports, Fire Safe Test Certificates, and third-party inspection.
Compatible with Leading Actuators
AUMA, Rotork, Bern
Simplify Your Flow Control with a Smart, Secure Valve
Request a Custom Quote Within 24 Hours
For more details about Zhejiang Yushun Valve Co., Ltd., please contact us:
Email: w584574148@gmail.com
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2025-03-12
