Bs341 8 vs Cga320 Detail: specs compared
Updated 05 September 2026.
5
specs differ
Bs341 8 and Cga320 Detail differ on 5 specs: designation, size / thread, fitting form, seals on, rating / role.
| Spec | Bs341 8 | Cga320 Detail |
|---|---|---|
| Designation | W21.8 (British designation) | 0.825"-14 NGO RH, flat nipple |
| Size / thread | 21.8 mm x 14 TPI right hand, external (the W21.8 thread) | 0.825"-14 NGO right hand, external, flat-seat nipple |
| Fitting form | cylinder valve outlet nut, external | cylinder valve outlet nut, flat seat |
| Seals on | captive O-ring or washer in the nut against the valve outlet | flat nylon or fibre washer inside the nut against the flat valve seat |
| Rating / role | the British Standard 341 designation for the CO2 cylinder outlet used across the UK | the CO2-only cylinder connection on North American refillable tanks |
Questions and answers
How do Bs341 8 and Cga320 Detail compare?
Bs341 8 and Cga320 Detail differ on 5 specs: designation, size / thread, fitting form, seals on, rating / role.