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Launching of GEH website
   
 
 
  STORMWATER MANAGEMENT
   
  Here you will find the systems developed specially for stormwater management or rainwater harvesting.
   
 
Carat S detention cistern
 
What is a detention cistern?
A detention cirsten retains the rainwater and drains it into the sewer at a delayed speed.
 
 

To guarantee retention of rainwater, a delayed drain is fitted in the channel with 0.05 to 2.0 l/sec. depending on the customer’s specifications. In the event of heavy rainfall, the water level in the cistern rises above this level and is drained into the channel at delayed speed using a floating drain choke. This relieves the channel and the treatment works.

The water level can rise to the emergency overflow and sinks slowly back down again after the rain to the long-term max. water level.

We also construct and supply individual, special solutions.
Sizes between 2,500 – 100,000 litres with corresponding retention volumes are possible. 

 

  • To retain rainwater and relieve the sewers
  • For frost-proof installation in the ground
  • "USA Patent 7854338"
 
   
 
EcoBloc Inspect flex  

The third generation of GRAF infiltration and attenuation system

 

Infiltration Tunnel  
Space-saving and good value. Specifically designed for use in private and rural areas.
 

Infiltration Tunnel Twin 600 L  
Space-saving and good value. Specifically designed for use in private and rural areas.
 

Herkules Infiltration tank  
The incomparable price-performance ratio. Infiltration tank for controlled draining of rainwater into the groundwater.
 
   
   
 
 
 
 
     
 
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