PTFE Butterfly Valves are widely used in industries that handle corrosive, abrasive, or high-purity media. By combining the compact design of a butterfly valve with the superior chemical resistance of PTFE (Polytetrafluoroethylene), these valves deliver reliable flow control in challenging process environments.
What Is a PTFE Butterfly Valve?
A PTFE Butterfly Valve is a quarter-turn valve in which the disc and internal wetted surfaces are lined or coated with PTFE. This lining acts as a protective barrier between the process media and the valve body, preventing corrosion, contamination, and chemical attack.
Construction and Components
Key components include:
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Valve Body: Typically cast iron, ductile iron, carbon steel, or stainless steel
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PTFE Lining: Molded or laminated for uniform thickness
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Disc: Stainless steel, ductile iron, or alloy steel with PTFE encapsulation
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Stem: Stainless steel for strength and corrosion resistance
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Seat: PTFE or reinforced PTFE for bubble-tight shutoff
Working Principle
When the actuator or handle rotates the stem by 90 degrees, the disc moves from a fully open to a fully closed position. The low friction coefficient of PTFE ensures smooth operation and minimal torque requirements.
Key Advantages
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Exceptional resistance to acids, alkalis, solvents, and aggressive chemicals
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Zero contamination for sensitive processes
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Lightweight design with easy installation
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Low maintenance due to non-stick PTFE surface
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Tight shutoff performance
Applications
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Chemical processing plants
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Water treatment facilities
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Pharmaceutical manufacturing
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Food and beverage processing
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Pulp and paper industry
Conclusion
PTFE Butterfly Valves provide a dependable solution for industries demanding chemical resistance, operational safety, and long service life, making them a preferred choice for modern process plants.
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