Specialized Items
PTFE Butterfly Valve Seat — 2–12 in nominal bore
Butterfly valve seats manufactured to standard sizes from 2" N.B. to 12" N.B. with accurate sealing geometry.
Technical specifications
| Dimensional availability | 2–12 in nominal bore |
|---|---|
| Tolerances | Sealing geometry to valve sample or approved drawing; CNC work available to ±0.05 mm where applicable |
| Available grades | Virgin PTFE, 15% Glass-filled PTFE, 25% Glass-filled PTFE, 25% Carbon-filled PTFE, Bronze-filled PTFE |
| ASTM test references | ASTM D4894, ASTM D4745 |
Final dimensions, tolerances and material grade are confirmed against your drawing and service conditions.
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Buyer questions
Which grades are available for PTFE Butterfly Valve Seat?
Virgin PTFE, 15% Glass-filled PTFE, 25% Glass-filled PTFE, 25% Carbon-filled PTFE, Bronze-filled PTFE are available subject to size, quantity and service requirements.
Can PTFE Butterfly Valve Seat be manufactured to a drawing?
Yes. Sealing geometry to valve sample or approved drawing; CNC work available to ±0.05 mm where applicable. Final tolerances are confirmed during quotation.
What is the continuous operating temperature of PTFE?
Virgin PTFE is commonly specified for continuous service from approximately -200°C to +260°C. Actual limits depend on load, pressure, filler grade and the process medium.
Selecting a filled grade? Read our PTFE vs Teflon engineering guide.