The Nylon Coated U Section Double Flange Butterfly Valve is a high-performance industrial solution specifically engineered for large-scale fluid control in demanding environments. Designed for sizes 28" and above, this valve combines the structural integrity of a double flange design with a specialized nylon coating to ensure superior corrosion resistance and operational longevity in water, oil, and gas applications.
Manufactured in strict accordance with API 609 and other international norms, this valve features a robust safety design including an anti-blow out stem and a high-torque gear unit operator. Its versatile material compatibility—ranging from ductile iron to Inconel 718—makes it an ideal choice for engineers seeking a reliable, low-maintenance sealing solution for heavy-duty industrial piping systems.
| Size Range | 28" and above | Pressure Rating | PN6 ~ PN25 |
|---|---|---|---|
| Design Standard | API 609 (Basic) | Face-to-Face | API 609, ASME B16.10, BS EN 558 |
| Connections | ASME B16.5, EN 1092, JIS 5K-20K | Body Materials | Cast Iron, Ductile Iron, Carbon Steel |
| Disc Material | Nylon Coated Ductile Iron/Carbon Steel | Stem Materials | 13CR, SS304, SS316, F51, F53, F55, 17-4PH, Inconel 718, Monel K-500 |
| Seat Materials | EPDM, NBR, BUNA-N, VITON | Operator Type | Gear Unit |
The advanced Nylon coating on the disc provides an exceptional barrier against oxidation and chemical erosion.
Guaranteed 12 months minimum service life with high-grade materials designed for long-term industrial use.
Equipped with an anti-blow out stem design to ensure maximum operator safety and leak prevention.
Integrated gear unit operator allows for smooth, precise movement even in large diameter valves.
100% chemical analysis and hydraulic shell/seal tests performed on every single unit produced.
Complies with API 598 and API 6D standards, ensuring seamless integration into global infrastructure.
Full chemical and mechanical test reports for each heat number of raw materials.
100% DPT testing on castings, with MT, UT, and RT options available upon request.
Rigorous 100% hydraulic shell and seal tests combined with low-pressure air testing.
Strict adherence to API 598 and API 6D inspection and approval norms.
Provision of free spare parts and comprehensive maintenance instructions.
Flexible manufacturing options for BW and RTJ connections based on order requirements.
| Performance Metric | Standard Butterfly Valve | Nylon Coated U-Section Valve |
|---|---|---|
| Corrosion Resistance | Moderate | Exceptional (Nylon Layer) |
| Maintenance Cycle | Frequent | Extended / Low Frequency |
| Operational Safety | Basic Stem Design | Anti-Blow Out Safety Stem |
| Installation Life | Standard | Enhanced Long-Term Durability |
| Quality Assurance | Batch Testing | 100% Individual Component Testing |
These valves are specifically designed for high-volume flow control in water, oil, and gas industries, especially where corrosion resistance is critical.
The basic design and manufacture follow API 609, with F-to-F dimensions adhering to API 609, ASME B16.10, and BS EN 558.
Yes, we offer a wide range of stem materials including SS316, F51, F53, F55, 17-4PH, Inconel 718, and Monel K-500 to meet various corrosive requirements.
Every valve undergoes 100% chemical analysis, DPT testing, and hydraulic shell/seal tests, alongside low-pressure air tests.
SAVVY VALVES provides a minimum 12-month service life guarantee, including free spare parts and detailed maintenance instructions when required.
Yes, while standard flanges are available, BW (Butt Weld) and RTJ (Ring Type Joint) connections are available upon request.
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