Specialized Items
PTFE Butterfly Valve Seats
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.
Applications & selection
Typical uses
- Butterfly valve sealing
- Valve refurbishment
Industries: Chemical, Water treatment, Process plants.
Selecting the right construction
Supply the valve model, sample or approved drawing, mating dimensions and shut-off requirements. Select the grade against medium, wear and valve operating conditions.
Chemical resistance depends on the polymer, fillers, inserts and process conditions. Confirm the exact medium and concentration; general PTFE properties do not establish a complete assembly's service rating.
Interactive product model
Buyer questions
Where are ptfe butterfly valve seats used?
Butterfly valve sealing, Valve refurbishment. Typical sectors include Chemical, Water treatment, Process plants; suitability depends on the actual service conditions.
What sizes can I request for ptfe butterfly valve seats?
2–12 in nominal bore. Final dimensions and tolerances are agreed during quotation.
What should I specify when ordering ptfe butterfly valve seats?
Supply the valve model, sample or approved drawing, mating dimensions and shut-off requirements. Select the grade against medium, wear and valve operating conditions.
How is material suitability confirmed for specialized items?
Submit the exact medium, concentration, temperature, pressure and mechanical duty. Grade availability and compatibility are confirmed for the specific construction; an ASTM reference is not a product certification.
Selecting a filled grade? Read our PTFE vs Teflon engineering guide.
Related products
Request a quotation
Include quantity, dimensions or a drawing, required material and the operating medium. Add concentration, temperature, pressure and motion or shaft speed where relevant. Final grade, inspection requirements and service limits are confirmed during quotation.
Request Quote for PTFE Butterfly Valve Seats