JG8 vs Nitrogen / beer-gas regulator (CGA-580 inlet: specs compared
Updated 05 September 2026.
6
specs differ
JG8 and Nitrogen / beer-gas regulator (CGA-580 inlet differ on 6 specs: designation, size / thread, fitting form, seals on, rating / role, tube od.
| Spec | JG8 | Nitrogen / beer-gas regulator (CGA-580 inlet |
|---|---|---|
| Designation | 5/16" (8 mm) OD | CGA-580 inlet, 5/16" barb out |
| Size / thread | 5/16" (about 7.94 mm) | CGA-580 (0.965"-14 NGO RH) cylinder inlet; 5/16" barb or 1/4" MFL gas outlet |
| Fitting form | push-fit collet, imperial | single-stage gas regulator, nitrogen side |
| Seals on | single O-ring plus stainless collet grab-ring | washer in the CGA-580 nut on the tank; barb under a worm clamp or flare on its face at the outlet |
| Rating / role | John Guest Speedfit rated 16 bar at 1 C, 10 bar at 20 C | dual-gauge nitrogen / argon / beer-gas regulator, typically 0 to 50 psi working pressure |
| Tube OD | 7.94 mm |
Questions and answers
How do JG8 and Nitrogen / beer-gas regulator (CGA-580 inlet compare?
JG8 and Nitrogen / beer-gas regulator (CGA-580 inlet differ on 6 specs: designation, size / thread, fitting form, seals on, rating / role, tube od.