Not a direct fit. Joining CO2 distribution manifold to Duotight 8mm push-in needs a Duotight 8mm to FFL fitting (onto a manifold MFL outlet). Sealing method, the real-world trap, and the exact part to buy.
Updated 05 September 2026.
Connect CO2 distribution manifold to Duotight 8mm push-in
How to join 1/4" MFL or 5/16" barb ports and 8 mm (5/16") OD, and what stops it leaking.
Not a direct fit. Joining CO2 distribution manifold to Duotight 8mm push-in needs a Duotight 8mm to FFL fitting (onto a manifold MFL outlet).
The two ends
- End A
- CO2 distribution manifold (1/4" MFL or 5/16" barb ports)
- End B
- Duotight 8mm push-in (8 mm (5/16") OD)
- A seals on
- flare face or barb clamp at each outlet; 1/4 NPT feed taped
- B seals on
- double EPDM O-ring on the tube outer wall
- Part needed
- Duotight 8mm to FFL fitting (onto a manifold MFL outlet)
The part to buy
To run EVABarrier 8mm gas line off a distribution manifold, a Duotight 8mm to FFL fitting screws its female flare onto a manifold MFL outlet and takes 8mm push-in line. This is the clean push-in way to split CO2 to several kegs.
Match the fitting to the outlet: an MFL manifold outlet needs an FFL-ended push-in fitting, a barb outlet needs push-on line and a clamp. Buying the wrong end gives you two males or a barb with nowhere to clamp.
Related connections
Questions and answers
Connect CO2 distribution manifold to Duotight 8mm push-in?
Not a direct fit. Joining CO2 distribution manifold to Duotight 8mm push-in needs a Duotight 8mm to FFL fitting (onto a manifold MFL outlet).