Connect Duotight 6.5mm push-in to FFL female flare (1/4")
How to join 6.5 mm (1/4") OD and 1/4" FFL (7/16"-20 UNF), and what stops it leaking.
Not a direct fit. Joining Duotight 6.5mm push-in to FFL female flare (1/4") needs a Duotight 6.5mm to 1/4 FFL flare fitting.
The two ends
- End A
- Duotight 6.5mm push-in (6.5 mm (1/4") 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 6.5mm to 1/4 FFL flare fitting
The part to buy
A Duotight 6.5mm to 1/4 FFL fitting presents a female flare that screws onto the MFL tail of a ball-lock or pin-lock disconnect and takes the thin 4mm ID x 6.5mm OD EVABarrier on the push-in end. It is the compact-line way onto a corny keg disconnect.
The FFL end seals on the flare face, not the thread, even on a plastic body. Screw it onto the disconnect and let the flare seat, no tape. Check the disconnect tail is male, not female, or you end up with two females that will not join.
Related connections
Sources: KegLand Duotight 6.5mm push-in fitting (EVABarrier 4mm ID x 6.5mm OD) · HowdyBrewer Duotight 6.5mm (1/4in) x 8mm (5/16in) reducer (KB01153) product data · MoreFlavor thread types explained (MFL/FFL, NPT, BSP) · KegLand Duotight 9.5mm x FFL (7/16-20 UNF, 1/4 SAE) product data