FAW-D-F AW Pneumatic Hard-Seated Flanged Butterfly Valve
The FAW-D-F AW Pneumatic Hard-Seated Flanged Butterfly Valve combines a robust triple-eccentric hard-seated design with the high-performance AW pneumatic actuator. Engineered for industrial pipelines, this valve delivers precise ON/OFF and modulating control while maintaining zero leakage even under high pressure and temperature conditions. Its flanged design allows for secure installation in pipelines ranging from DN50 to DN2000. Constructed from durable cast steel, stainless steel, or special alloy materials, with PTFE or flexible graphite seats, the valve ensures long-term reliability and resistance to wear and corrosion. Optional accessories, including limit switches and electric/pneumatic positioners, enable remote monitoring and automated flow control for demanding industrial applications.
Technical Specifications
Key Features
- Triple-eccentric hard-seated design ensures zero leakage and long service life
- Integrated AW pneumatic actuator for precise ON/OFF and modulating control
- Flanged connection for secure and easy installation in pipelines
- Wide temperature range: -29℃ to +425℃ for high-temperature applications
- Suitable for large diameters: DN50-DN2000
- Durable body, disc, and stem materials: cast steel, stainless steel, or special alloys
- PTFE or flexible graphite seat for excellent sealing performance
- Optional limit switches, electric/pneumatic positioners, and I/P converters for automated control
Technical Parameters of FAW-D-F AW Pneumatic Hard-Seated Flanged Butterfly Valve
| Butterfly Valve | |
|---|---|
| Type | Triple-Eccentric Hard-Seated Flanged Butterfly Valve |
| Nominal Pressure | 1.0 MPa (PN10), 1.6 MPa (PN16) |
| Nominal Diameter | DN50-DN2000 |
| Temperature Range | -29℃~+425℃ |
| Body Material | Cast Steel, Stainless Steel |
| Disc Material | Cast Steel, Stainless Steel, or Special Materials |
| Stem Material | Cast Steel, Stainless Steel, or Special Materials |
| Seat Material | PTFE or Flexible Graphite |
| AW Series Electric Actuator | |
| Type | Double Acting & Single Acting (Spring Return) |
| Structure Features | Two-piece cylinder, high torque output, smooth and balanced operation; piston rod hard-chrome plated for wear resistance; sliding components with oil-free guide shafts and rings to reduce friction and extend service life |
| Applicable Valves | Large-diameter ball valves, butterfly valves, and other rotary valves |
| Torque Range | Double Acting: 515 – 157,300 Nm Single Acting: 230 – 37,000 Nm |
| Cylinder Volume | 3.25 L – 315 L |
| Functions | Double Acting: Two-position control for valve open/close Spring Return: Automatic open/close when power or air supply fails Single Solenoid Valve: Valve opens or closes when powered, opposite when unpowered (Explosion-proof optional) Double Solenoid Valve: One coil powers valve open, the other powers valve close, with memory function (Explosion-proof optional) Limit Switch Feedback: Remote signal for valve position (Explosion-proof optional) Electric Positioner: Controls valve flow based on 4~20mA signal Pneumatic Positioner: Controls valve flow based on 0.02~0.1MPa pressure signal I/P Converter: Converts electric signal to pneumatic, used with pneumatic positioner (Explosion-proof optional) |
FAW-D-F AW Pneumatic Hard-Seated Flanged Butterfly Valve Structure and Dimension 
Product Drawings
Comprehensive Technical Drawing (Dimensions & Structure)
Product Benefits & Features
Why Choose Fleyenda Valve Manufacturing
Product Stability
We use reinforced structures and precision sealing to ensure consistent performance under pressure and temperature changes.
Conpany&Product Certification
We have CE, RoHS, ISO, SIL, TUV, and IP68 waterproof certifications covering safety, quality, and environmental standards.
Projects Experience
Cooperated over 40 countries, we have experience in oil & gas, energy, water, chemicals, food & beverage, and automation.
Customization Capability
With 20 years experience, we turn complex working conditions into precise valve solutions with high speed and accuracy.
Aftersales Support
•We have technical team provides real-time video support to help customers resolve on-site issues quickly.
Customer Cases
Trusted by Shell plc, Petronas, Chevron, TotalEnergies, and Dupont in projects across 40+ countries.
Our Product Actual Export Pictures
