Cga320 vs Cga326: specs compared
Updated 05 September 2026.
5
specs differ
Cga320 and Cga326 differ on 5 specs: designation, size / thread, fitting form, seals on, rating / role.
| Spec | Cga320 | Cga326 |
|---|---|---|
| Designation | 0.825"-14 NGO RH | 0.825"-14 NGO RH, round seat |
| Size / thread | 0.825"-14 NGO (National Gas Outlet), right hand | 0.825"-14 NGO right hand, external, large round nipple |
| Fitting form | cylinder valve outlet nut, external | cylinder valve outlet nut, round seat |
| Seals on | nylon or fibre washer inside the nut against the valve outlet | washer against a round nipple seat |
| Rating / role | the North American CO2 cylinder connection, on refillable tanks up to about 1800 psi | the nitrous oxide cylinder connection; shares the thread of CGA-320 but not the seat |
Questions and answers
How do Cga320 and Cga326 compare?
Cga320 and Cga326 differ on 5 specs: designation, size / thread, fitting form, seals on, rating / role.