Polytetra Processors — everything in P.T.F.E. items and FEP lined valves

FEP Lined Items

FEP-Lined Reducers & Reducing Flanges

Concentric and eccentric reducers with 3 mm PTFE/FEP lining, plus stress free heavy wall reducing flange liners from 40 mm N.B. to 150 mm N.B. in "S" and "C" type.

FEP Lined Reducers & Reducing Flanges

Technical specifications

Dimensional availability40–150 mm nominal bore; concentric, eccentric, S and C types
TolerancesFlange drilling and liner dimensions to approved drawing
Available gradesVirgin PTFE, FEP, PFA, Glass-filled PTFE where specified
ASTM test referencesASTM D4894, ASTM D4745

Final dimensions, tolerances and material grade are confirmed against your drawing and service conditions.

Applications & selection

Typical uses

  • Line size transition
  • Flange adaptation

Industries: Chemical, Fertilizer.

Selecting the right construction

Provide inlet and outlet bores, reducer type, flange drilling and face-to-face dimensions. Confirm liner material and installation orientation.

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

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Buyer questions

Where are fep-lined reducers & reducing flanges used?

Line size transition, Flange adaptation. Typical sectors include Chemical, Fertilizer; suitability depends on the actual service conditions.

What sizes can I request for fep-lined reducers & reducing flanges?

40–150 mm nominal bore; concentric, eccentric, S and C types. Final dimensions and tolerances are agreed during quotation.

What should I specify when ordering fep-lined reducers & reducing flanges?

Provide inlet and outlet bores, reducer type, flange drilling and face-to-face dimensions. Confirm liner material and installation orientation.

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.

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 FEP-Lined Reducers & Reducing Flanges