Lined Fittings
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Full technical data and dimensions
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PTFE Lined Full Face Adapter Flange
Lined adapter flange, NB 1/2" to 16", 12–36.6 mm
Lined adapter flange with a full-face fluoropolymer facing — mates a lined line to unlined or dissimilar equipment. NB 1/2" to 16" in PTFE, PFA and FEP.
| Product type | Lined full face adapter flange |
|---|---|
| Body / steel grade | IS 2062 plate / ASTM A 105 |
| Lining material | PTFE / PFA / FEP |
| Liner standard | ASTM D 1457 / ASTM D 4894-19 (PTFE), ASTM D 3307 (PFA), ASTM D 2116 (FEP) |
| Lining options | Virgin or anti-static (conductive black) PTFE to ASTM D 4894 & D 4895, PFA to ASTM D 3307, FEP to ASTM D 2116 |
| Flange standard | ASME/ANSI B16.5 |
| Flange class | Class 150 standard; Class 300 on request |
| Size range | NB 1/2" to NB 16" |
Product overview
What it does, and where it fits.
A full face adapter flange carries the fluoropolymer across the whole flange face rather than just the raised face. That makes it the correct transition piece between a lined line and equipment with a flat-faced or dissimilar flange — a plastic vessel nozzle, an FRP line, a rubber-lined item — where a raised-face joint would concentrate load and crack the mating flange.
The flange is cut from IS 2062 plate or ASTM A 105 and drilled to ASME/ANSI B16.5 Class 150. PTFE, PFA and FEP are all marked applicable across the full NB 1/2" to 16" range, at the same thicknesses as the lined blind flange.
Features
Built into every unit.
- Fluoropolymer facing across the full flange face, not just the raised face
- PTFE, PFA or FEP available in every size NB 1/2" to 16"
- IS 2062 plate or ASTM A 105 drilled to B16.5 Class 150
- Thickness 12 mm at NB 1/2" to 36.6 mm at NB 16"
- Class 300 drilling and stainless steel bodies on request
Benefits
Why it earns its place in the line.
- Spreads bolt load evenly — safe against flat-faced plastic, FRP and lined equipment
- Provides a clean transition between lined and unlined sections
- Outstanding corrosion resistance to aggressive organic and inorganic chemicals across a wide temperature range
- Non-stick, non-wetting bore — low surface energy keeps product moving and simplifies cleaning
- Chemically inert and pure; no additives, plasticisers, stabilisers or lubricants to contaminate the process fluid
- The lowest coefficient of friction of any solid, reducing pressure drop and deposit build-up
Applications & industries
Where it is specified.
Typical applications
- Connecting lined pipework to FRP, PP or PVDF equipment
- Transitions between lined and unlined sections of a line
- Mating to flat-faced vessel and pump nozzles
- Adapting to rubber-lined and glass-lined equipment flanges
Industries served
- Chemical processing
- Pharmaceutical
- Petrochemical
- Oil & gas
- Power generation
- Pulp & paper
- Mining & metallurgy
- Agrochemicals & dyes
Technical data
Specification for PTFE Lined Full Face Adapter Flange.
Figures below are for this product only — every item in the range carries its own dimension table.
| Product type | Lined full face adapter flange |
|---|---|
| Body / steel grade | IS 2062 plate / ASTM A 105 |
| Lining material | PTFE / PFA / FEP |
| Liner standard | ASTM D 1457 / ASTM D 4894-19 (PTFE), ASTM D 3307 (PFA), ASTM D 2116 (FEP) |
| Lining options | Virgin or anti-static (conductive black) PTFE to ASTM D 4894 & D 4895, PFA to ASTM D 3307, FEP to ASTM D 2116 |
| Flange standard | ASME/ANSI B16.5 |
| Flange class | Class 150 standard; Class 300 on request |
| Size range | NB 1/2" to NB 16" |
| Temperature range | Continuous service to 260 °C (PTFE melting point 327 °C, PFA 306 °C, FEP 260 °C) |
| Pressure rating | ASME/ANSI B16.5 Class 150 flanges as standard; Class 300 available on request |
| Manufacturing standard | ASTM F 1545 |
| Spark testing | Every lined component spark tested at 5000 × E volts (E = liner thickness in mm), to a maximum of 15 000 V |
| Hydro testing | Hydrostatic or pneumatic test according to the lining technique; hydrostatic test on components with vent holes |
| Inspection | Dimensional and visual examination of liner and steel parts — weld aspect, overall dimensions, collar size, liner thickness, surface flaws and paint thickness |
| Vent holes | 3 mm diameter vent holes — one per fitting; spools under 500 mm get a single central hole, spools over 500 mm get two holes about 150 mm from each end |
| External protection | Zinc epoxy primer, minimum 60 μm dry film, over steel sand-blasted to SA 2.5 |
| Certification | EN 10204 3.1 mill certificates and FDA certification for the fluoropolymer available on request |
| Face type | Full face fluoropolymer facing |
| Size | Face to face L (±2) | PTFE | PFA | FEP |
|---|---|---|---|---|
| 0.5" | 12 | ✓ | ✓ | ✓ |
| 0.75" | 12.7 | ✓ | ✓ | ✓ |
| 1" | 14.3 | ✓ | ✓ | ✓ |
| 1.5" | 17.5 | ✓ | ✓ | ✓ |
| 2" | 19 | ✓ | ✓ | ✓ |
| 2.5" | 22.4 | ✓ | ✓ | ✓ |
| 3" | 23.9 | ✓ | ✓ | ✓ |
| 4" | 23.9 | ✓ | ✓ | ✓ |
| 6" | 25.4 | ✓ | ✓ | ✓ |
| 8" | 28.5 | ✓ | ✓ | ✓ |
| 10" | 30.3 | ✓ | ✓ | ✓ |
| 12" | 31.8 | ✓ | ✓ | ✓ |
| 14" | 35.1 | ✓ | ✓ | ✓ |
| 16" | 36.6 | ✓ | ✓ | ✓ |
All dimensions in mm. All three lining materials are marked applicable across the full size range.
Available on request
- ANSI B16.5 Class 300
- Stainless steel body
- Higher diameters on request
FAQ
Questions we are asked about this item.
Whenever the mating flange is flat-faced or made from a brittle material — FRP, plastic, cast iron, glass-lined equipment. A raised face concentrates the bolt load on a narrow ring and can crack them.
Yes, when joining to a different material. The catalogue notes that lined components do not generally need a gasket between themselves, but one is required against a dissimilar material and where the joint is repeatedly assembled and dismantled.
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Enquiry
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