EVA 63id vs FFL: specs compared
Updated 05 September 2026.
6
specs differ
EVA 63id and FFL differ on 6 specs: designation, size / thread, fitting form, seals on, rating / role, tube od.
| Spec | EVA 63id | FFL |
|---|---|---|
| Designation | 6.3 mm ID / 9.5 mm OD | 1/4" FFL (7/16"-20 UNF) |
| Size / thread | 6.3 mm inner diameter, 9.5 mm outer diameter double-wall EVA line | 7/16"-20 UNF female thread, 45 degree flare seat |
| Fitting form | double-wall EVA beer / gas tubing | SAE 45 degree flare, female |
| Seals on | the 9.5mm OD is what a Duotight 9.5mm or John Guest 3/8 collet grips | mates against a male 45 degree flare face |
| Rating / role | the 9.5mm-system line; the wider 6.3mm bore suits longer beer runs and UK 3/8 dispense | the female half of the homebrew flare standard |
| Tube OD | 9.5 mm |
Questions and answers
How do EVA 63id and FFL compare?
EVA 63id and FFL differ on 6 specs: designation, size / thread, fitting form, seals on, rating / role, tube od.