Otto Graf GmbH
Plastic Products
Tel. +49 7641 589-0
Fax +49 7641 589-50
export@graf.info
www.graf-water.com
Carl-Zeiss-Straße 2-6
DE-79331 Teningen, Germany

Carat S retention cistern

The GRAF Retention cistern combines rain retention with rainwater harvesting.


Instructions
Sizing form/
Tender file
Carat S retention cistern

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 and the retention or harvest volumes. In the event of heavy rainfall, the water level in the cistern rises above the max. water level (short term) 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. This rainwater can then be harvested.

We also construct and supply individual, special solutions.
Sizes between 3,750 – 100,000 l with corresponding retention volumes are possible.

This special type of rainwater harvesting is prescribed or subsidised in many communities. 

  • For rainwater retention
  • For rainwater harvesting in the house and garden
  • For frost-proof installation in the ground
  • The entire tank volume can be used for rainwater retention
  • "USA Patent 7854338"

 

 


3,750 l

order no.Length (mm)Width (mm)Height (mm)Inner Ø dome shaft (mm)add to enquiry
370519228017552200650
Total volume (l)Retention volume (l)Useable volume (l)
375015002250

4,800 l

order no.Length (mm)Width (mm)Height (mm)Inner Ø dome shaft (mm)add to enquiry
370520228019852430650
Weight (kg)Total volume (l)Retention volume (l)Useable volume (l)
185480020002800

6,500 l

order no.Length (mm)Width (mm)Height (mm)Inner Ø dome shaft (mm)add to enquiry
370521239021902710650
Weight (kg)Total volume (l)Retention volume (l)Useable volume (l)
220650030003500

Technical details

max. earth covering (mm) (without groundwater, vehicle loading)max. axle load (t)max. vehicle weight (t)
200083,5 / 12
Earth covering with loading capacity (mm)Earth covering with groundwater installation (mm)
800 - 2000800 - 1800

accessory

Mini telescopic dome shaft with lid, suitable for pedestrian loading

[371010]

Maxi telescopic dome shaft with lid, suitable for pedestrian loading

[371011]

Telescopic dome shaft with cast iron lid, suitable for vehicle loading

[371020]

Telescopic dome shaft TRUCK

Telescopic dome shaft TRUCK for concrete rings

[371021]

Extension

[371003]

Choke drain package detention/retention

For underground tank Carat 0,05 - 2,0 l/s, DN 100 connection, 3 m hose

[369020]

Enquiry (0)


https://www.graf-water.com/retention/retention-cisterns/carat-s-retention-cistern.html

We use cookies for the purpose of enhancing the contents and for your convenience in using the Web Site. By entering this site, you acknowledge and agree that we are using cookies. For more information on this, please refer to the data protection notice section.

Do not show this message again