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CO2 distribution manifold: 1/4" MFL (7/16-20 UNF) or 5/16" barb outlets; 1/4" NPT feed on many blocks, multi-port gas splitter with integrated check valves, seals on flare face or barb clamp at each outlet; 1/4 NPT feed taped. What it fits and the adapters to join it to other keg fittings.

Updated 05 September 2026.

Bench / Fittings / Fitting

CO2 distribution manifold (1/4" MFL or 5/16" barb ports)

Where 1/4" MFL or 5/16" barb ports is used, its real dimensions, and how to connect it to other keg fittings.

Published dimensions

Designation
1/4" MFL or 5/16" barb ports
Size / thread
1/4" MFL (7/16-20 UNF) or 5/16" barb outlets; 1/4" NPT feed on many blocks
Fitting form
multi-port gas splitter with integrated check valves
Seals on
flare face or barb clamp at each outlet; 1/4 NPT feed taped
Rating / role
splits one regulator output to two, three or four keg gas lines, each with a check valve

Used on: running several kegs from one CO2 regulator, with a check valve per line to stop beer backing up between kegs.

A distribution manifold carries several MFL flare or 5/16 barb outlets fed from a 1/4 NPT block, each behind a check valve so a foamed keg cannot push beer into a neighbouring line. Match the outlet type to your line: flare outlets take FFL swivels or push-in flare fittings, barb outlets take 5/16 line and a clamp.

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

Connect CO2 distribution manifold to MFL male flare (1/4")direct fitConnect CO2 distribution manifold to Duotight 8mm push-inneeds an adapterConnect CO2 distribution manifold to 1/4" NPTneeds an adapterConnect CO2 distribution manifold to Inline gas shutoff valvedirect fitInline gas check valverelated fitting (1/4" FFL x 1/4" MFL)Inline gas shutoff valverelated fitting (1/4" MPT x 1/4" MFL)

Questions and answers

What is the designation of the CO2 distribution manifold (1/4" MFL or 5/16" barb ports)?

1/4" MFL or 5/16" barb ports

What is the size / thread of the CO2 distribution manifold (1/4" MFL or 5/16" barb ports)?

1/4" MFL (7/16-20 UNF) or 5/16" barb outlets; 1/4" NPT feed on many blocks

What is the fitting form of the CO2 distribution manifold (1/4" MFL or 5/16" barb ports)?

multi-port gas splitter with integrated check valves

What is the seals on of the CO2 distribution manifold (1/4" MFL or 5/16" barb ports)?

flare face or barb clamp at each outlet; 1/4 NPT feed taped