EVA 5ID vs Post Firestone: specs compared
Updated 05 September 2026.
6
specs differ
EVA 5ID and Post Firestone differ on 6 specs: designation, size / thread, fitting form, seals on, rating / role, tube od.
| Spec | EVA 5ID | Post Firestone |
|---|---|---|
| Designation | 5 mm ID / 8 mm OD | 9/16"-18 UNF |
| Size / thread | 5 mm inner diameter, 8 mm outer diameter double-wall EVA line | 9/16"-18 UNF (about 14.3 mm major) |
| Fitting form | double-wall EVA beer / gas tubing | UNF male post thread |
| Seals on | the 8mm OD is what a Duotight 8mm or John Guest 5/16 collet grips | poppet inside the post; post base O-ring seals to the keg lid |
| Rating / role | the common 8mm-system beer line; wider 5mm bore than the 4mm gas line | gas and liquid posts share the thread; disconnect snaps over the outside |
| Tube OD | 8 mm |
Questions and answers
How do EVA 5ID and Post Firestone compare?
EVA 5ID and Post Firestone differ on 6 specs: designation, size / thread, fitting form, seals on, rating / role, tube od.