GU Thread Adapter vs G5/8 regulator inlet (G5/8 (BSP parallel)): specs compared
Updated 05 September 2026.
5
specs differ
GU Thread Adapter and G5/8 regulator inlet (G5/8 (BSP parallel)) differ on 5 specs: designation, size / thread, fitting form, seals on, rating / role.
| Spec | GU Thread Adapter | G5/8 regulator inlet (G5/8 (BSP parallel)) |
|---|---|---|
| Designation | 13/16"-14 to 7/8"-14 | G5/8 (BSP parallel) |
| Size / thread | 1/2" BSP (13/16"-14) one end, 5/8" BSP (7/8"-14) the other | G5/8 (5/8" BSP parallel) |
| Fitting form | port thread adapter | parallel pipe thread, regulator side |
| Seals on | flat washer on each threaded face | flat washer on the face of the inlet |
| Rating / role | converts the 1/2" BSP (13/16"-14) beer port some G and U couplers carry to the 5/8" BSP (7/8"-14) standard | a common regulator inlet thread that a CGA-320 or W21.8 adapter presents |
Questions and answers
How do GU Thread Adapter and G5/8 regulator inlet (G5/8 (BSP parallel)) compare?
GU Thread Adapter and G5/8 regulator inlet (G5/8 (BSP parallel)) differ on 5 specs: designation, size / thread, fitting form, seals on, rating / role.