Underground tanks
The first GRAF plastic underground tank was launched in 1978.
Since then, GRAF has become a market-leader in manufacturing rainwater harvesting tanks.
We now use a combination of rotomoulding and injection moulding processes, with a large emphasis on quality and testing during production, making sure every tank we produce performs precisely as intended.
To comply with Australian codes and standards, our rainwater tanks are made from virgin plastics – but that’s not to say they don’t measure up when it comes to sustainability.
Our tanks are:
- Lightweight and spatially efficient, lowering the environmental impacts of shipping and logistics.
- Designed so they are easy to use, strong, stable and long-lasting with a precision fit.
- Engineered to redirect rainwater for grey-water applications.
- Fully recyclable at end of life.
Carat Underground Rainwater Tank
The new generation for rainwater harvesting. Easy to transport thanks to its stackable design and low weight.
Carat Underground Rainwater Tank
The new generation for rainwater harvesting. Easy to transport thanks to its stackable design and low weight.
Carat XL Underground Rainwater Tank
Specifically developed for rainwater harvesting, available in sizes 8500 and 10000 litres.
Carat XL Underground Rainwater Tank
Specifically developed for rainwater harvesting, available in sizes 8500 and 10000 litres.
Carat XXL Underground Rainwater Tank
High-capacity water management in a lightweight, durable underground tank system. From 16,000 to 122,000 litres.
Platin Flat Rainwater Tank
Flat tanks developed for rainwater harvesting in shallow applications, available in sizes from 1500 to 5000 litres.
Carat Underground Rainwater Tank
The new generation for rainwater harvesting. Easy to transport thanks to its stackable design and low weight.
Carat XL Underground Rainwater Tank
Specifically developed for rainwater harvesting, available in sizes 8500 and 10000 litres.
Platin Flat Rainwater Tank
Flat tanks developed for rainwater harvesting in shallow applications, available in sizes from 1500 to 5000 litres.
Platin XL Flat Rainwater Tank
Flat tanks developed for rainwater harvesting in shallow applications, available in 10000 litre and 15000 litre variants.
Platin XXL flat tank
Flat tanks developed for rainwater harvesting in shallow applications, available in 20,000 litre to 65,000 litre