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CARAT 2700L Retention Tank: Protect yourself from floods and mudslides
Do you want to protect your land from heavy rainfall?
Stop damage through prevention with a retention tank!
Retention tanks have the significant advantage of diverting rainwater from the public network during heavy rainfall. This, in turn, limits the risk of flooding.
That is why public authorities are increasingly asking people to equip themselves with them.
Today, this is undoubtedly the reason why you're investing in rainwater harvesting systems for your home. You'll be delighted; it's a valuable asset for protecting your property and surroundings.
Choosing the right retention tank
To receive free support in choosing your installation, our team is at your side.
Complete this information form and we will get back to you within 24 hours: a free quote will be drawn up.
Discover the Carat Retention Tank from the GRAF brand

> Volume selection
With the Carat tank model, gain autonomy on your water consumption: this tank model offers the possibility of a capacity of 2.7 to 6.5 m3 (i.e. from 2700 litres to 6500 litres).
> Lightness of the tank
Extremely light and maneuverable with its 120 to 220 kg, you can easily carry it with straps, from 2 to 6 people or with a small construction vehicle for more comfort.
Simple control and cleaning
Extremely easy to clean and control, you will be particularly pleased with it! This tank is thanks to its 600 mm manhole and smooth internal wall.
> Guaranteed quality tank
Its 30-year warranty ensures long-term peace of mind. Therefore, we recommend that you carefully follow the installation instructions.
Good to know and plan for the CARAT retention tank

Often , retention is imposed by the town halls of the place of installation and you will find the details of the requirements in the specifications.
> Plan carefully for the unloading of the tank when it arrives at your home (appointment).
> Required backfill height: 800-2000 mm.
If you would like your tank pre-drilled in a location other than those provided for this purpose (see plan in the "Documents" section), we can provide this tailor-made service.
You can also opt for the CARAT dual-function Retention and Storage tank to supply your garden during heat waves (available on our website and check with the requirements imposed by your municipality).
GRAF tanks are the result of over 45 years of expertise.
For an optimal user experience and to guarantee you the best of the resilient tank, this model has been specially designed to be robust, facilitate access for control and cleaning and is guaranteed for 30 years.
Designed with the utmost care, the Carat tank is resistant, lightweight, eco-friendly, economical, and virtually invisible, as it is buried underground. While protecting you,It will provide you with undeniable comfort and security.
Technical data for the CARAT tank
Flow regulator pack to address water level problems
Necessary when the bottom of the tank is higher than the drainage system, drain, or storm basin. However, be sure to have this installation approved by the local inspector before work begins.
Choosing the right retention tank
To receive free support in choosing your installation, our team is at your side.
Complete this information form and we will get back to you within 24 hours: a free quote will be drawn up.
- Cuve de rétention par gravité
- 2700 L
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