Ball-lock liquid disconnect (MFL) (black QD vs Cga326: specs compared
Updated 05 September 2026.
5
specs differ
Ball-lock liquid disconnect (MFL) (black QD and Cga326 differ on 5 specs: designation, size / thread, fitting form, seals on, rating / role.
| Spec | Ball-lock liquid disconnect (MFL) (black QD | Cga326 |
|---|---|---|
| Designation | black QD, 1/4" MFL tail | 0.825"-14 NGO RH, round seat |
| Size / thread | snaps over the liquid post; 1/4" MFL (7/16-20 UNF) tail | 0.825"-14 NGO right hand, external, large round nipple |
| Fitting form | snap-on liquid quick disconnect | cylinder valve outlet nut, round seat |
| Seals on | O-ring over the post shoulder; flare face at the MFL tail | washer against a round nipple seat |
| Rating / role | the liquid-side ball-lock disconnect, keyed to the liquid post and usually black | the nitrous oxide cylinder connection; shares the thread of CGA-320 but not the seat |
Questions and answers
How do Ball-lock liquid disconnect (MFL) (black QD and Cga326 compare?
Ball-lock liquid disconnect (MFL) (black QD and Cga326 differ on 5 specs: designation, size / thread, fitting form, seals on, rating / role.