Choke drain shaft, suitable for pedestrian loading/vehicle loading
Ensures controlled rainwater draining to the channel when the infiltration system is overloaded.
Ideal for high retention drainage
- Choke drain shaft with external access
- Compatible with Platin tank 1,500 to 7,500 l and Carat tank 2,700 to 6,500 l and Carat XL/XXL tank 8,500 to 122,000 litre
- Also possible with other retention tanks
- Volume flow adjustable from 1.0 litres to 2.0 litres per second
- Factory-set volume flow if required