3200L HERCULE tank with underground junction kit for watering your garden

Make your life easier with the Hercules underground rainwater storage tank, the most practical to transport and install!

This quantity of free water at your fingertips will give you very interesting savings, in addition to serving the planet!

With a suitable filtration system, you can easily water your garden and even wash your car.

Discover the Hercules tank special for rainwater:

Volumes adapted to your needs:

Gain autonomy over your water consumption! With this model of tank you have at your disposal and at any time, a capacity of 1.6 m3 on a single tank, up to 4.8 m3 by combining the tanks, or even more if you wish.

Lightness of this tank:

Handle it more easily than a traditional plastic or concrete tank! Extremely light with its total 60 kg, it can be carried by hand.

Tank for easy transport and assembly:

This clever tank can be easily transported in 2 parts weighing 30 kg, thanks to its separate shells before assembly. You can go through the door, if you want to place it in a backyard garden for example.

It is equipped with a certified seal, attested and tested with a view to quality, in order to last effectively over time.

Its very simple and patented closing system is ensured by its 24 clamping clips, and saves you valuable time during assembly, before quickly moving on to the treatment and/or connection system of your choice.

Tank guaranteed over time:

This rainwater collector has strong durability. Also, its warranty extends up to 10 years. To this end, we advise you to carefully follow the installation instructions and take care of the modules during installation and transport.

For a water resource available all year round:

Practical, economical and ecological, the Hercules in-ground tank is a tank capable of adapting to your needs if they prove to be growing, thanks to its twinning possibility.

With a suitable volume and untreated filtered water, this tank allows you to benefit from free water all year round. You can use it for your domestic needs, allowing you to save water drawn from the network. You can wash your car, your laundry, water your garden and even flush your toilet!

Thanks to the storage of rainwater, you avoid prefectural orders banning watering. In this way, you can move towards autonomy and prevent shortages.

Good to know and plan for:

• For maximum comfort, we offer dedicated optional Kits and Accessories. They must be ordered separately from the tank (suggested in the drop-down menu).
• Delivery is assured by appointment.
• Optional, external buried filters, inspection chimney (recommendation: 1 per tank), submersible tubular pump etc.
• If you wish to have the tanks pre-drilled, it is important to inform us.
• Allow 80 cm of space between two tanks to be buried.
• Interlocking connection pipe to be provided between the Hercules tanks: a simple classic rigid pipe (e.g. PVC) with a diameter of 10 cm, DN100, will allow you to connect the tanks together. The lip seals will automatically seal between the pipe and the tank shell.

GRAF tanks represent over 45 years of know-how in the field of rainwater.

For an optimal user experience and to guarantee you the best from the rainwater tank, its design has been specially designed to guarantee its waterproofness, its robustness and its practicality.

Designed with the greatest care, the Hercules tank is light to transport for easy installation and use. It offers a standard and expandable amount of storage to meet domestic needs, such as watering the garden.