32 mm barb (to 1" or 1-1/4" BSP) vs 40 mm barb (to 1-1/4" or 1-1/2" BSP): specs compared
Updated 05 September 2026.
3
specs differ
32 mm barb (to 1" or 1-1/4" BSP) and 40 mm barb (to 1-1/4" or 1-1/2" BSP) differ on 3 specs: barb size, thread options, use.
| Spec | 32 mm barb (to 1" or 1-1/4" BSP) | 40 mm barb (to 1-1/4" or 1-1/2" BSP) |
|---|---|---|
| Barb size | 32 mm hose bore (1 1/4 inch) | 40 mm hose bore (1 1/2 inch) |
| Thread options | 1 inch BSP or 1 1/4 inch BSP | 1 1/4 inch BSP or 1 1/2 inch BSP |
| Seals with | a Jubilee clip over the barb | a Jubilee clip over the barb |
| Use | larger pumps and gravity-fed filters | high-flow pumps, large gravity filters and waterfalls |
Questions and answers
How do 32 mm barb (to 1" or 1-1/4" BSP) and 40 mm barb (to 1-1/4" or 1-1/2" BSP) compare?
32 mm barb (to 1" or 1-1/4" BSP) and 40 mm barb (to 1-1/4" or 1-1/2" BSP) differ on 3 specs: barb size, thread options, use.