Ball-lock gas disconnect (MFL vs Cga320: specs compared
Updated 05 September 2026.
5
specs differ
Ball-lock gas disconnect (MFL and Cga320 differ on 5 specs: designation, size / thread, fitting form, seals on, rating / role.
| Spec | Ball-lock gas disconnect (MFL | Cga320 |
|---|---|---|
| Designation | grey QD, 1/4" MFL tail | 0.825"-14 NGO RH |
| Size / thread | snaps over the gas post; 1/4" MFL (7/16-20 UNF) tail, often with an integrated check valve | 0.825"-14 NGO (National Gas Outlet), right hand |
| Fitting form | snap-on gas quick disconnect | cylinder valve outlet nut, external |
| Seals on | O-ring over the post shoulder; flare face at the MFL tail | nylon or fibre washer inside the nut against the valve outlet |
| Rating / role | the gas-side ball-lock disconnect, keyed to the gas post and usually grey or white | the North American CO2 cylinder connection, on refillable tanks up to about 1800 psi |
Questions and answers
How do Ball-lock gas disconnect (MFL and Cga320 compare?
Ball-lock gas disconnect (MFL and Cga320 differ on 5 specs: designation, size / thread, fitting form, seals on, rating / role.