G5/8 regulator inlet (G5/8 (BSP parallel)) vs Jg38: specs compared
Updated 05 September 2026.
6
specs differ
G5/8 regulator inlet (G5/8 (BSP parallel)) and Jg38 differ on 6 specs: designation, size / thread, fitting form, seals on, rating / role, tube od.
| Spec | G5/8 regulator inlet (G5/8 (BSP parallel)) | Jg38 |
|---|---|---|
| Designation | G5/8 (BSP parallel) | 3/8" (9.5 mm) OD |
| Size / thread | G5/8 (5/8" BSP parallel) | 3/8" (9.53 mm) |
| Fitting form | parallel pipe thread, regulator side | push-fit collet, imperial |
| Seals on | flat washer on the face of the inlet | single O-ring plus stainless collet grab-ring |
| Rating / role | a common regulator inlet thread that a CGA-320 or W21.8 adapter presents | Speedfit acetal fittings rated to 12 bar at 20 C, 6 bar at 65 C |
| Tube OD | 9.53 mm |
Questions and answers
How do G5/8 regulator inlet (G5/8 (BSP parallel)) and Jg38 compare?
G5/8 regulator inlet (G5/8 (BSP parallel)) and Jg38 differ on 6 specs: designation, size / thread, fitting form, seals on, rating / role, tube od.