Teflon Lined Butterfly Valve - SIO
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  • Butterfly valve
  • Teflon Lined Butterfly Valve 2
  • Butterfly valve
  • Teflon Lined Butterfly Valve 2

Teflon Lined Butterfly Valve

Fully PFA lined disc and body provide unsurpassed resistance to corrosion, permeation and microbial contamination for maximum purity and reliability with minimum maintenance. Durable, spherically molded PFA liner and matching disc interface to form a tight bidirectional seal. Full width 360° energized backup liner provides uniform sealing. Adjustable live-loaded, stem sealing system to eliminate leak paths and reduce fugitive emissions for long-term, maintenance-free operation. PFA disc over-molding is mechanically bonded to the base metal for full vacuum capability. Streamlined disc engineered for maximum flow. High-strength one-piece disc and stem standard for improved reliability. ISO 5211 top mounting plate for easy actuation.


  • High Performance PFA Lining
  • Melt process able for precise molding of parts with smoother surface finishes than PTFE liners.
  • Superior flexibility to withstand repeated flexing and dynamic loads for extended service life.
  • Higher resistance to permeation for increased durability with lower total cost of ownership.
  • Lower particle shedding for maximum purity.
  • Superior creep resistance at high temperatures.
  • Increased resistance to microbial contamination.
  • Also known by the trade name Teflon
Size Range 11/2″ to 20″ (40 to 500mm)
Pressure RatingsUp to 150psi (10bar)
Vacuum RatingTo 0.0002 psia (1.03 x 10-2 torr)
Temperature-20°F to 320°F (-29°C to 160°C)
Body StyleTwo-piece, Wafer, Lug
Face-to-faceANSI B 16.34 ISO 5752, API 609
Top Plate ISO 5211
FE StandardISO 15848-1, ISO 15848-2
DrillingASME B16.5 CL150, DIN PN16,JIS 10K


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