Beer tailpiece (barb + hex) (7/8"-14 nut, 1/4" or 3/16" barb)
Where 7/8"-14 nut, 1/4" or 3/16" barb is used, its real dimensions, and how to connect it to other keg fittings.
Published dimensions
- Designation
- 7/8"-14 nut, 1/4" or 3/16" barb
- Size / thread
- 7/8"-14 shoulder held by a beer nut; 1/4" or 3/16" hose barb
- Fitting form
- barbed nipple with a shouldered nut seat
- Seals on
- flat washer against the shank end under the beer nut; barb under a worm clamp on the hose
- Rating / role
- the piece that turns a shank thread into a hose barb for vinyl beer line
Used on: behind a shank or on a coupler tail, taking 3/16 or 1/4 inch ID beer line.
The tailpiece is the adapter between the 7/8-14 shank world and vinyl line. Its shoulder seats against the shank on a washer held by the beer nut, and its barb takes 3/16 or 1/4 line under a clamp. Two seals on one part: a washer at the shank, a clamp at the barb, and neither wants tape.
Flare fittings seal on the 45 degree flare face and must never be taped. Push-in fittings seal on an O-ring against the tube wall and need the tube cut square. Barbs seal under a worm clamp. Getting the sealing method right matters more than the thread label, because most homebrew leaks are a taped flare or an unclamped barb.
Connect this fitting
Sources: American Homebrewers Association: the anatomy of a beer faucet (7/8-14 shank, beer nut, tailpiece, washer) ยท Star Beverage draft beer tubing tailpiece, barb, hex nut, clamp kit (3/8 ID)