Cga326 vs Duo65: specs compared
Updated 05 September 2026.
6
specs differ
Cga326 and Duo65 differ on 6 specs: designation, size / thread, fitting form, seals on, rating / role, tube od.
| Spec | Cga326 | Duo65 |
|---|---|---|
| Designation | 0.825"-14 NGO RH, round seat | 6.5 mm (1/4") OD |
| Size / thread | 0.825"-14 NGO right hand, external, large round nipple | 6.5 mm (1/4") |
| Fitting form | cylinder valve outlet nut, round seat | push-in collet, metric |
| Seals on | washer against a round nipple seat | double EPDM O-ring on the tube outer wall |
| Rating / role | the nitrous oxide cylinder connection; shares the thread of CGA-320 but not the seat | fitting rated to 100 psi; matched to EVABarrier 4mm ID x 6.5mm OD tube |
| Tube OD | 6.5 mm |
Questions and answers
How do Cga326 and Duo65 compare?
Cga326 and Duo65 differ on 6 specs: designation, size / thread, fitting form, seals on, rating / role, tube od.