Connect Duotight 9.5mm push-in to FFL female flare (1/4")
How to join 9.5 mm (3/8") OD and 1/4" FFL (7/16"-20 UNF), and what stops it leaking.
Not a direct fit. Joining Duotight 9.5mm push-in to FFL female flare (1/4") needs a Duotight 9.5mm to 1/4 FFL flare fitting.
The two ends
- End A
- Duotight 9.5mm push-in (9.5 mm (3/8") OD)
- End B
- FFL female flare (1/4") (1/4" FFL (7/16"-20 UNF))
- A seals on
- double EPDM O-ring on the tube outer wall
- B seals on
- mates against a male 45 degree flare face
- Part needed
- Duotight 9.5mm to 1/4 FFL flare fitting
The part to buy
A Duotight 9.5mm to 1/4 FFL fitting screws its female flare onto a disconnect MFL tail and takes EVABarrier 6.3mm ID x 9.5mm OD line on the push-in end. It is the 3/8-line way onto a ball-lock or pin-lock corny keg disconnect.
Most disconnect tails are male (MFL), so the FFL-ended fitting is the one you want; the MFL-ended version leaves two males that will not join. The flare seals on its face, so screw it home and let it seat without tape.
Related connections
Sources: KegLand Duotight push-in fittings (manufacturer) · KegLand EVABarrier 6.3mm ID x 9.5mm OD tubing (manufacturer) · MoreFlavor thread types explained (MFL/FFL, NPT, BSP) · KegLand Duotight 9.5mm x FFL (7/16-20 UNF, 1/4 SAE) product data