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FLO Plain couplers
| Vinidex Code | Nominal Size (mm) | Material | Stiffness (SN) | Carton Quantity |
| 31508 | 225 | PVC | 8 | 2 |
| 31509 | 300 | PVC | 8 | 1 |
| 31510 | 375 | PVC | 8 | 1 |
| 31511 | 450 | PE | 8 | 1 |
| 31512 | 525 | PE | 8 | 1 |
| 31513 | 600 | PE | 8 | 1 |