FAT-D-CFW Pneumatic Cast Iron Wafer PTFE Butterfly Valve
The Pneumatic Cast Iron Wafer PTFE Butterfly Valve features a PTFE-lined seal for corrosion resistance and tight shutoff, ensuring reliable operation in chemical and wastewater systems, while its pneumatic actuator enables precise flow control and reduced maintenance—tested to API 598 and EN 12266-1 for zero-leak performance under 16 bar.
Technical Specifications
| Size Range | DN50–DN300 (2″–12″) |
| Working Pressure Range: | PN10 / PN16 (10–16 bar) |
| Working Temperature Range: | −20°C ~ +180°C |
| Body Material: | Cast Iron |
| Connection Type: | Wafer Type |
| Applicable Medium: | Corrosive chemicals, acids, alkalis, seawater, pure water, solvents, air |
| Actuator Type: | Double-acting or Spring-return Pneumatic Actuator |
| Voltage Options | 24V DC / 110V AC / 220V AC |
| Design Standard | ISO 5211 / EN 558 / API 609 |
| Testing Standard | API 598 / EN 12266-1 |
| Fire-Safe Design | Not Fire-Safe |
| Certification | CE / RoHS / ISO 9001 / IP65 (Actuator) |
| Customization | Above Are Standard Parameter Samples. If You Have Specific Parameters And Materials, We Can Customize Them All. |
Product Drawings
Comprehensive Technical Drawing (Dimensions & Structure)
Product Benefits & Features
1. Corrosion & Chemical Resistance
• Pneumatic Cast Iron Wafer PTFE Butterfly Valve with full PTFE lining resists acids, alkalis, and corrosive media.
• Non-contaminating surface suits chemical, food, and pharmaceutical pipelines.
• Air-operated butterfly valve design ensures leak-free performance in harsh fluids.
• Reliable operation under chemical and industrial environments.
2. Automation & Control Efficiency
• Pneumatic actuator enables precise and fast flow control.
• ISO 5211 mounting pad simplifies automation setup.
• Spring-return or double-acting options ensure stable on/off control.
• Low torque design improves energy efficiency in automated systems.
3. Durability & Structural Reliability
• Cast iron butterfly valve body offers strong mechanical strength for medium pressure lines.
• PTFE seat prevents wear and sticking, extending valve lifespan.
• API 598 and EN 12266-1 tested for zero leakage.
• Compact wafer-type pneumatic valve saves space with high pressure resistance.
4. Installation & Application Versatility
• Wafer connection fits PN10/PN16/ANSI150 flanges.
• Ideal for chemical processing, wastewater, and HVAC systems.
• Operates from −20°C to +180°C for diverse conditions.
• Voltage options 24V DC, 110V AC, 220V AC for flexible automation integration.
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
FAQs That 80% Users Interest
1. What size and pressure ratings should I select for a PTFE-lined wafer butterfly valve?
• Choose sizes from DN50–DN300 (2″–12″) to fit standard pipeline systems.
• Ensure the pressure rating PN10 / PN16 matches your system pressure.
• Verify actuator torque to prevent leakage or incomplete closure.
• Check manufacturer data for accurate pressure and flow compatibility.
2. Can the pneumatic cast iron wafer butterfly valve handle aggressive chemicals?
• The PTFE lining resists strong acids, alkalis, and solvents.
• Low-friction liner surface prevents buildup and ensures smooth flow.
• Wafer design allows easy sealing and installation in corrosive pipelines.
• Ideal for chemical, wastewater, and process industries.
3. How to select the right actuator for an air-operated wafer butterfly valve?
• Use ISO 5211 mounting to ensure direct actuator installation.
• Choose spring-return or double-acting type based on control needs.
• Confirm actuator torque exceeds valve operating torque.
• Match voltage options 24 V DC, 110 V AC, 220 V AC for automation systems.
4. What maintenance ensures long service life of a PTFE-lined butterfly valve?
• Inspect the PTFE liner regularly for cracks or deformation.
• Maintain correct flange alignment and torque during installation.
• Monitor torque variation to detect early seat or disc wear.
• Keep actuator parts clean and air supply stable.
5. Can a pneumatic PTFE-lined butterfly valve be used for flow control?
• Suitable for both isolation and moderate throttling.
• Works best with a positioner for stable flow regulation.
• Check valve Cv and flow curve before control applications.
• Select control-rated models for precise modulation.