DUO QD Gas8 vs DUO QD Liq8: specs compared
Updated 05 September 2026.
4
specs differ
DUO QD Gas8 and DUO QD Liq8 differ on 4 specs: designation, size / thread, fitting form, rating / role.
| Spec | DUO QD Gas8 | DUO QD Liq8 |
|---|---|---|
| Designation | grey QD, 8mm push-in tail | black QD, 8mm push-in tail |
| Size / thread | snaps over the gas post; integrated 8mm push-in tail | snaps over the liquid post; integrated 8mm push-in tail |
| Fitting form | snap-on gas QD with integrated push-in | snap-on liquid QD with integrated push-in |
| Seals on | O-ring over the post shoulder; 8mm push-in O-rings on the tube | O-ring over the post shoulder; 8mm push-in O-rings on the tube |
| Rating / role | the gas-side ball-lock disconnect with a built-in 8mm Duotight, no separate flare fitting needed | the liquid-side ball-lock disconnect with a built-in 8mm Duotight |
Questions and answers
How do DUO QD Gas8 and DUO QD Liq8 compare?
DUO QD Gas8 and DUO QD Liq8 differ on 4 specs: designation, size / thread, fitting form, rating / role.