Back Ferrule
INCH OD Tubes
| T Tube OD | Fluid Controls Part No. |
| 1/16 | 1 fb |
| 1/8 | 2 fb |
| 1/4 | 4 fb |
| 5/16 | 5 fb |
| 3/8 | 6 fb |
| 1/2 | 8 fb |
| 5/8 | 10 fb |
| 3/4 | 12 fb |
| 7/8 | 14 fb |
| 1 | 16 fb |
| 1.1/4 | 20 fb |
| 1.1/2 | 24 fb |
| 2 | 32 fb |
METRIC OD Tubes
| T Tube OD | Fluid Controls Part No. |
| 3 | fb-3 |
| 6 | fb-6 |
| 8 | fb-8 |
| 10 | fb-10 |
| 12 | fb-12 |
| 14 | fb-14 |
| 15 | fb-15 |
| 16 | fb-16 |
| 18 | fb-18 |
| 20 | fb-20 |
| 22 | fb-22 |
| 25 | fb-25 |
| 28 | fb-28 |
| 30 | fb-30 |
| 32 | fb-32 |
| 38 | fb-38 |
