Limitation and regulation
Regulation of the return flow is essential to ensure the discharge levels authorised by the authorities. Different models are available, depending on the requirements.
| Model | Advantages | Disadvantages | Illustration |
| Canplast type flow limiter |
- Economical - Integrated overflow - Removable strainer |
- flow dependent on the water level |  |
| Vortex type regulator | - Increased performance - removable |
- without overflow - chamber over-depth required |
 |
| Cyclonic Vortex type regulator | - Increased performance - removable - water level |
- without overflow |  |
| Floreg flow regulator | - Short response time - +/- 5% accuracy |
- amplitude of radial control - without overflow |
 |
| Regul.O flow regulator with radial control |
- Short response time - +/- 5% accuracy |
- amplitude of radial control - without overflow |
 |
| Regul.O flow regulator with axial control |
- Short response time - +/- 5% accuracy |
- amplitude of axial control - without overflow |
 |
