PTFE Lined Butterfly Valve
Overview: The KELOR PTFE Lined Butterfly Valve is engineered for superior corrosion resistance and near-zero leakage in aggressive environments. Featuring a 100% Virgin PTFE full-face lining, it provides an inert barrier between process fluids and metal components. Ideal for acids, alkalis, solvents, and slurries. Available in Wafer, Lug, and Double-Flanged designs (ANSI/DIN/JIS).
Technical Specifications
- Size Range: DN15 (½”) – DN1200 (48″)
- Pressure Rating: PN6 to PN40 / Class 150 to 300
- Body Materials: CI / DI / WCB / SS304 / SS316
- Disc Material: SS304 / SS316 / Hastelloy (optional)
- Liner: Virgin PTFE (full-face, chemically inert)
- Stem: SS410 / SS304 / SS316 (Anti-static design)
- Temperature: -40°C to +150°C (process dependent)
Quality & Accessories
- Testing: API 598 / EN12266 (Hydro & Seat)
- Spark Test: 15 KVDC (ensures lining integrity)
- Actuation: Gearbox, Pneumatic, or Electric
- Mounting: ISO 5211 Top Mounting Pad
- Special Trims: Fire-Safe Design available
- Certifications: ISO 9001:2015, Mill Test Certs (MTC)
| Model Series | KELOR-PTFE-BF |
| Seat & Lining | Virgin PTFE (Full-lined, bubble-tight shut-off) |
| Face-to-Face Standards | API 609, EN 558, ISO 5752 |
| End Connections | Wafer, Lug, Double Flange (ANSI B16.5 / DIN PN10-16) |
| Packing & Export | Fumigated wooden crates / palletized as per international export norms |
Product Description & Industrial Applications
The KELOR PTFE Lined Butterfly Valve is purpose-built for contamination-free flow control in highly corrosive environments. The continuous Virgin PTFE lining acts as a non-reactive shield, protecting the metal body and disc from aggressive chemicals, extending the valve’s service life significantly while minimizing maintenance costs.
Typical Industries: Chemical & Petrochemical Processing, Pharmaceutical Manufacturing, Water & Wastewater Treatment, Electroplating, Mining Slurries, Pulp & Paper, and Specialty Battery Manufacturing lines.
Why Choose KELOR? We provide custom configurations, including lined bodies with SS discs, PTFE-sleeved stems, and tailored flange dimensions for seamless integration into existing piping systems. Every valve undergoes rigorous 15 KVDC spark testing to guarantee zero porosity in the lining.
Frequently Asked Questions
What is the maximum temperature for a PTFE lined butterfly valve?
The standard operating temperature range is -40°C to +150°C. For higher temperatures, we recommend our PFA or FEP lined variants, which can withstand up to 200°C.
Can this valve be automated?
Yes. All KELOR PTFE lined butterfly valves feature an ISO 5211 top mounting pad, allowing easy integration with pneumatic, electric, or gear actuators for remote operation.
Do you provide test certificates?
Absolutely. Every batch is supplied with a Mill Test Certificate (MTC) and hydrostatic/seat test reports as per API 598 / EN 12266 standards.