Lined Valves
Lined Valves
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Full technical data and dimensions
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PTFE Lined Ball Valve
Lined quarter-turn ball valve, NB 1" to 10"
Quarter-turn lined ball valve for tight shut-off on corrosive service — NB 1" to 10", face to face 127 mm to 300 mm, lined in PFA or FEP.
| Product type | Lined ball valve, quarter-turn |
|---|---|
| Body / steel grade | ASTM A 216 Gr. WCB |
| Lining material | PTFE / PFA / FEP |
| Liner standard | ASTM D 3307 (PFA), ASTM D 4894-19 |
| 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" to NB 10" |
Product overview
What it does, and where it fits.
A lined ball valve gives full-bore, quarter-turn isolation with the ball, seats and body cavity all presenting fluoropolymer to the process. It is the default isolation valve on lined pipework because it shuts off tightly, opens to a nearly unobstructed bore and has no cavity where corrosive product can stagnate against bare metal.
The body is a casting to ASTM A 216 Gr. WCB, lined and flanged to ASME/ANSI B16.5 Class 150. Face-to-face dimensions follow the standard pattern for the range, from 127 mm at NB 1" to 300 mm at NB 10", so the valve interchanges with the lined non-return and plug valves of the same bore.
The catalogue marks PFA and FEP as applicable for this item and gives the liner specification as ASTM D 3307 and ASTM D 4894-19.
Features
Built into every unit.
- Quarter-turn operation with tight bi-directional shut-off
- Cast body to ASTM A 216 Gr. WCB, lined and flanged to B16.5 Class 150
- NB 1" to 10", face to face 127 mm to 300 mm
- Interchangeable face-to-face with the lined non-return and plug valves
- Stainless steel body on request
Benefits
Why it earns its place in the line.
- Fluoropolymer wetted path — body, seats and closure member all isolated from the process
- Cast steel body strength with fluoropolymer chemistry inside
- 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
- Primary isolation on lined process lines
- Batch charging and discharge on reactors
- High-purity duties where metal pick-up is unacceptable
- Effluent, scrubber and process-waste service
- Lines where exotic alloy valves are uneconomic
Industries served
- Chemical processing
- Pharmaceutical
- Petrochemical
- Oil & gas
- Power generation
- Pulp & paper
- Mining & metallurgy
- Agrochemicals & dyes
Technical data
Specification for PTFE Lined Ball Valve.
Figures below are for this product only — every item in the range carries its own dimension table.
| Product type | Lined ball valve, quarter-turn |
|---|---|
| Body / steel grade | ASTM A 216 Gr. WCB |
| Lining material | PTFE / PFA / FEP |
| Liner standard | ASTM D 3307 (PFA), ASTM D 4894-19 |
| 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" to NB 10" |
| 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 |
| 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 to face | 127 mm to 300 mm, tolerance ±3 mm |
| Size | Face to face L (±3) | PTFE | PFA | FEP |
|---|---|---|---|---|
| 1" | 127 | — | ✓ | ✓ |
| 1.5" | 165 | — | ✓ | ✓ |
| 2" | 178 | — | ✓ | ✓ |
| 2.5" | 190 | — | ✓ | ✓ |
| 3" | 203 | — | ✓ | ✓ |
| 4" | 229 | — | ✓ | ✓ |
| 6" | 267 | — | ✓ | ✓ |
| 8" | 292 | — | ✓ | ✓ |
| 10" | 300 | — | ✓ | ✓ |
All dimensions in mm. ✓ = applicable, — = not applicable, exactly as marked in the catalogue.
Available on request
- Stainless steel body
FAQ
Questions we are asked about this item.
The lined ball valve gives a quarter-turn, near-unobstructed bore when open. Confirm the exact bore for your size with us if you intend to pig or rod the line.
Yes — it is a standard quarter-turn valve. Tell us the actuator type, supply pressure and any fail position required with your enquiry.
Use the tightening torque table for the flange size — 30 N·m at NB 1", 60 N·m at NB 2"–4", 110 N·m at NB 6"–8" and 160 N·m at NB 10" — cross-tightening as with any flange joint.
Related products
Commonly specified alongside PTFE Lined Ball Valve.
Enquiry
Tell us your line size — we'll confirm the spec.
Send the bore, the media, the temperature and pressure, and the flange standard you work to. Drawings and custom sizes welcome.
Not sure which spec fits your process?
Send your requirement — media, temperature, pressure, dimensions — and we'll recommend the right product or fabricate it.
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