Connect Ball-lock quick disconnect to Duotight 9.5mm push-in
How to join ball-lock QD, MFL or barb tail and 9.5 mm (3/8") OD, and what stops it leaking.
Not a direct fit. Joining Ball-lock quick disconnect to Duotight 9.5mm push-in needs a Duotight 9.5mm to FFL fitting (onto the disconnect MFL tail).
The two ends
- End A
- Ball-lock quick disconnect (ball-lock QD, MFL or barb tail)
- End B
- Duotight 9.5mm push-in (9.5 mm (3/8") OD)
- A seals on
- O-ring seals over the post shoulder; the tail seals by flare or clamp
- B seals on
- double EPDM O-ring on the tube outer wall
- Part needed
- Duotight 9.5mm to FFL fitting (onto the disconnect MFL tail)
The part to buy
The 9.5mm version does the same job for 3/8 line: a Duotight 9.5mm to FFL fitting screws its female flare onto the disconnect MFL tail and takes EVABarrier 9.5mm tube on the push-in end. This is the usual UK beer-line connection to a ball-lock keg.
Match the fitting size to your tube, not the disconnect. The disconnect tail is 1/4 MFL either way; buying the 8mm body when your line is 9.5mm leaves the tube unable to seat. Size on the tube.
Related connections
Sources: Keg Outlet corny keg disconnects (ball lock and pin lock, MFL/barb tails) · DraftMag ball lock vs pin lock disconnect comparison · KegLand Duotight push-in fittings (manufacturer) · KegLand EVABarrier 6.3mm ID x 9.5mm OD tubing (manufacturer)