Graf 8500 litre Carat XL Underground Storage Tank

Excl Vat


The Carat XL underground tank has been specially developed for rainwater harvesting and for use as a retention cistern, firefighting water tank, process water tank and septic tank. It is available in sizes 8,500 and 10,000 l, vehicle or lorry-bearing (combined with Telescopic dome shaft with cast iron lid or TRUCK).

  • Optimal tank geometry and statics due to CAD product development – equals highest stability
  • Unique fitting accuracy of the components
  • Dome opening with stainless steel profile for precision fit and secure mounting
  • Consistent quality due to constant production monitoring
  • Vehicle or lorry-bearing (combined with Telescopic dome shaft with cast iron lid or TRUCK)
  • Groundwater stable up to the middle of the tank thanks to extremely stable construction
  • Secure investment thanks to the market leading 15-year warranty!
  • Can be expanded as required
  • Length: 3500mm
  • Width: 2040mm
  • Height: 2695mm
  • Weight: 380kg


Free delivery is included in the price of all products over €100. Delivery should be between 3-5 days normally. Larger tanks and custom made GRP products will have a 14 day lead time to site. We endeavour always to get products to site in the shortest time frame. Refer to our shipping policy for more detailed information.

Payment & Security

American Express Apple Pay Google Pay Maestro Mastercard PayPal Shop Pay Union Pay Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

You may also like

Recently viewed