Raccord union de réduction en inox 316L permettant de connecter un tube d'un diamètre "D1" à un autre tube de diamètre "D2" de moindre importance en ligne
| Tubes métriques (mm) | ||||||
| D Ø tube | D 1 Ø tube1 | N (mm) | N1 (mm) | N2 (mm) | L (mm) | Inox 316L |
| 6 | 4 | 14 | 12 | 13 | 39 | RDBUR6M4M |
| 8 | 4 | 17 | 14 | 13 | 40 | RDBUR8M4M |
| 8 | 6 | 17 | 14 | 14 | 41 | RDBUR8M6M |
| 10 | 6 | 19 | 17 | 14 | 43 | RDBUR10M6M |
| 10 | 8 | 19 | 17 | 17 | 45 | RDBUR10M8M |
| 12 | 6 | 22 | 22 | 14 | 46 | RDBUR12M6M |
| 12 | 8 | 22 | 22 | 19 | 47,5 | RDBUR12M8M |
| 12 | 10 | 22 | 22 | 22 | 50 | RDBUR12M10M |
| 14 | 12 | 27 | 22 | 22 | 52 | RDBUR14M12M |
| 16 | 12 | 27 | 24 | 22 | 53 | RDBUR16M12M |
| 18 | 16 | 32 | 27 | 27 | 54 | RDBUR18M16M |
| 20 | 12 | 32 | 27 | 22 | 53 | RDBUR20M12M |
| 22 | 16 | 32 | 32 | 27 | 54 | RDBUR22M16M |
| 25 | 16 | 41 | 41 | 27 | 55 | RDBUR25M16M |
| Tubes ISO (DN en pouce ISO) | ||||||
| D Ø tube | D 1 Ø tube1 | N (mm) | N1 (mm) | N2 (mm) | L (mm) | Inox 316L |
| 17,2 | 13.7 | 30 | 25 | 27 | 53 | RDBUR6S4S |
| 21,3 | 13,7 | 35 | 25 | 32 | 55 | RDBUR8S4S |
| 21,3 | 17,2 | 35 | 30 | 32 | 56 | RDBUR8S6S |
| 26,9 | 21.3 | 41 | 35 | 36 | 61 | RDBUR12S8S |
| 33.7 | 26.9 | 45 | 41 | 42 | 64.5 | RDBUR16S12S |
| Tubes impériaux (OD en fraction de pouce américain) | ||||||
| D Ø tube | D 1 Ø tube1 | N (mm) | N1 (mm) | N2 (mm) | L (mm) | Inox 316L |
| 3/8” | 1/4" | 19 | 17 | 14 | 45 | RDBUR6I4I |
| 1/2" | 1/4" | 22 | 22 | 14 | 48 | RDBUR8I4I |
| 1/2" | 3/8" | 22 | 22 | 19 | 49 | RDBUR8I6I |
| 3/4" | 1/2" | 32 | 27 | 22 | 52 | RDBUR12I8I |
| D'une norme de tube à une autre | ||||||
| D Ø tube | D 1 Ø tube1 | N (mm) | N1 (mm) | N2 (mm) | L (mm) | Inox 316L |
| 6 | 1/8" | 14 | 12 | 10 | 39 | RDBUR6M2I |
| 1/4" | 6 | 14 | 12 | 14 | 40 | RDBUR4I6M |
| 8 | 1/4" | 17 | 14 | 14 | 41 | RDBUR8M4I |
| 10 | 3/8" | 19 | 17 | 19 | 48 | RDBUR10M6I |
| 1/2" | 12 | 22 | 22 | 22 | 52 | RDBUR8I12M |