Tubing — Acids
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LibertyCES has documented Tubing in Acids service, including Sulfuric Acid. Wetted materials to confirm: FEP/PFA/PTFE/ECTFE and PVDF. Documented models include Altaflo/Pexco ALTAFLUOR 200/350/400/480. Compatibility depends on exact concentration, temperature and duty cycle, so confirm with a free spec review.
Notes from the vendor documentation
Fluoropolymer tubing remains resistant at fuming-acid concentrations where PVDF fails, per file's engineering-rules cross-reference.
Materials documented for this service
- FEP/PFA/PTFE/ECTFE (remain resistant)
- PVDF (fails at fuming concentrations)
Products cited for this service
Real Specifications
| Spec | Value | Source document |
|---|---|---|
| ALTAFLUOR 400 PFA temperature ceiling | 500°F upper service temperature | Altaflo — Fluoropolymer Tubing & Pipe |
| ALTAFLUOR 200 FEP temperature ceiling | 400°F upper service temperature | Altaflo — Fluoropolymer Tubing & Pipe |
| ALTAFLUOR 480 UHP PFA purity grade | Made exclusively from a high molecular weight, high-purity resin; explicitly rated resistant to common fluorosurfactants | Altaflo — Fluoropolymer Tubing & Pipe |
| Altaflo 100 PTFE temperature range | -410°F to 500°F continuous service, 550°F short-term — broadest range in the Altaflo line | Pexco — Fluoropolymer & Thermoplastic Tubing |
| Altaflo 500 PVDF temperature ceiling | -20°F to 250°F, made from 100% virgin Kynar 740 homopolymer resin | Pexco — Fluoropolymer & Thermoplastic Tubing |
Altaflo 100 PTFE and Altaflo 500 PVDF are both explicitly rated not suitable for flare-type fittings — a real fitting-compatibility caveat that matters when specifying tubing hardware for a high-temperature acid transfer line in this family.
Fuming sulfuric acid and oleum push tubing past where PVDF's 250°F ceiling holds up — ALTAFLUOR 400 PFA's 500°F rating and Altaflo 100 PTFE's -410°F to 500°F range are the real ceilings to check before assuming any "fluoropolymer tubing" handles the most aggressive acid concentrations a process can throw at it.
Every material and product claim on this page traces to real, vendor-published documentation on file with LibertyCES. Chemical compatibility depends on exact concentration, temperature, and duty cycle — confirm current specifications with the manufacturer and request a spec review before final specification.
FAQ
Can Tubing handle Acids?
Fluoropolymer tubing remains resistant at fuming-acid concentrations where PVDF fails, per file's engineering-rules cross-reference.
What wetted materials should Tubing use in Acids service?
Materials documented for this service: FEP/PFA/PTFE/ECTFE (remain resistant), PVDF (fails at fuming concentrations). Compatibility depends on exact concentration, temperature and duty cycle, so confirm with a spec review before final specification.
Which Acids chemicals does this cover?
Named chemicals in this documentation: Sulfuric Acid (98%, fuming/oleum).
Which Tubing models are documented for Acids?
Documented examples include Altaflo/Pexco ALTAFLUOR 200/350/400/480.
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Reviewed by James Riggins, 30+ years specifying water and chemical process equipment · Updated