Tailpiece vs Cornelius corny keg post (19/32"-18 UNF): specs compared
Updated 05 September 2026.
5
specs differ
Tailpiece and Cornelius corny keg post (19/32"-18 UNF) differ on 5 specs: designation, size / thread, fitting form, seals on, rating / role.
| Spec | Tailpiece | Cornelius corny keg post (19/32"-18 UNF) |
|---|---|---|
| Designation | 7/8"-14 nut, 1/4" or 3/16" barb | 19/32"-18 UNF |
| Size / thread | 7/8"-14 shoulder held by a beer nut; 1/4" or 3/16" hose barb | 19/32"-18 UNF (about 15.1 mm major) |
| Fitting form | barbed nipple with a shouldered nut seat | UNF male post thread |
| Seals on | flat washer against the shank end under the beer nut; barb under a worm clamp on the hose | poppet inside the post; the post base O-ring seals to the keg lid |
| Rating / role | the piece that turns a shank thread into a hose barb for vinyl beer line | gas post and liquid post share the thread; the disconnect snaps over the outside, not the thread |
Questions and answers
How do Tailpiece and Cornelius corny keg post (19/32"-18 UNF) compare?
Tailpiece and Cornelius corny keg post (19/32"-18 UNF) differ on 5 specs: designation, size / thread, fitting form, seals on, rating / role.