Cga580 vs Duo8: specs compared
Updated 05 September 2026.
6
specs differ
Cga580 and Duo8 differ on 6 specs: designation, size / thread, fitting form, seals on, rating / role, tube od.
| Spec | Cga580 | Duo8 |
|---|---|---|
| Designation | 0.965"-14 NGO RH | 8 mm (5/16") OD |
| Size / thread | 0.965"-14 NGO (National Gas Outlet), right hand, external | 8 mm (5/16") |
| Fitting form | cylinder valve outlet nut, external | push-in collet, metric |
| Seals on | nylon or fibre washer inside the nut against the valve outlet | double EPDM O-ring on the tube outer wall |
| Rating / role | the North American connection for nitrogen, argon and beer-gas (N2/CO2 mix) cylinders, up to 3000 psig | fitting rated to 100 psi; EVABarrier tube burst over 300 psi at 25 C |
| Tube OD | 8 mm |
Questions and answers
How do Cga580 and Duo8 compare?
Cga580 and Duo8 differ on 6 specs: designation, size / thread, fitting form, seals on, rating / role, tube od.