FEP Lined Items
FEP-Lined Flush-Bottom Valves
Flush bottom valves with reversible glass filled Teflon seat and 3 mm lining, also available with long spindle and long seat proven in batch taking and discharge.
Technical specifications
| Dimensional availability | Standard vessel outlets; ANSI Class 150 body; 3–5 mm virgin FEP lining; long spindle option; spark tested at 20 kV |
|---|---|
| Tolerances | Seat and flange dimensions to approved drawing |
| Available grades | Virgin PTFE, FEP, PFA, Glass-filled PTFE where specified |
| 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
- Reactor bottom discharge
- Batch sampling
Industries: Chemical, Pharmaceutical.
Selecting the right construction
Provide vessel outlet geometry, seat arrangement, spindle length and discharge medium. Confirm actuation, lining and the pressure-temperature rating for the complete valve.
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 fep-lined flush-bottom valves used?
Reactor bottom discharge, Batch sampling. Typical sectors include Chemical, Pharmaceutical; suitability depends on the actual service conditions.
What sizes can I request for fep-lined flush-bottom valves?
Standard vessel outlets; ANSI Class 150 body; 3–5 mm virgin FEP lining; long spindle option; spark tested at 20 kV. Final dimensions and tolerances are agreed during quotation.
What should I specify when ordering fep-lined flush-bottom valves?
Provide vessel outlet geometry, seat arrangement, spindle length and discharge medium. Confirm actuation, lining and the pressure-temperature rating for the complete valve.
How is material suitability confirmed for fep lined 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.
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