• Graf Carat Silentio 6,500 Litre Tank
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Graf Carat Silentio 6,500 Litre Tank

£3,984.00 (£3,320.00 ex VAT)
£3,984.00 (£3,320.00 ex VAT)
Est. delivery 5-7 working days
Loading Lid

The Silentio 6,500 Litre Rainwater Harvesting Tank by Graf provides a sustainable and cost-effective way to reuse rainwater for non-potable applications such as WCs, washing machines, and external taps. Manufactured from 100% recycled plastic, this eco-friendly system helps you save money on water bills while supporting greener living.

Designed for installations up to 15 metres away from the property, the Silentio range combines advanced technology with quiet operation and award-winning filtration. Its shallow-dig design simplifies installation, reduces excavation costs, and allows for easy granular backfill instead of concrete.

Benefits:

  • Manufactured from sustainable, 100% recycled materials
  • Shallow dig design — low excavation area for easier installation
  • Uses cost-saving granular backfill (no concrete required)
  • Award-winning internal filtration system
  • Free delivery and free commissioning included
  • Control panel with water level display
  • Automatic low-level switching and timed jet washing of filter
  • Ultra-quiet system operation
  • Ideal for a wide range of domestic applications

Available with either a pedestrian or vehicle-loading lid for added versatility.

View Datasheet Here

View Installation Guide Here

CALL FOR EXPERT ADVICE: 0121 351 3230

Full Description

The new Silentio range by Graf offers exceptional water quality for non-potable water uses inside and outside of the home.

This tank will save you money in many ways. Firstly, by reusing rainwater as a natural resource, you will save money in the long run on your water bills, as well as practising sustainability. Also, during installation, this tank only requires a granular backfill, as opposed to concrete. This will save you up to £60 per cubic metre. It also makes installation much easier. See the installation guide above for more details.

This 6,500 litre Carat Silentio tank is made from 100% recycled plastic. So, not only are you helping the planet by reusing rainwater, the tank itself is made from reusable materials.

The rainwater filters use efficient self-cleaning technology, which has won awards. You can trust this tank to produce pure, clean water in every use.

Additional benefits:
- The Silentio tank is the only rainwater harvester of its kind to use a domestic external pump unit with an AA air gap in the UK
- Complete package provided
- Telescopic lid
- Fast lead time
- Automatic pumps
- Consistent water supply
- Easy installation

What's included:
1. Underground tank (choice of tanks available, sizes vary according to property type)
2. Telescopic lid (choice of telescopic lid available, depending on tank location)
3. Filter (Minimax filter supplied in accordance with the type of tank)
4. Floating water intake
5. AA Silentio unit
6. Float sensor (connected from Silentio unit to the underground tank)
7. Reversible flow filter

Manufacturer SKU

RWH6500-G/CSP

Technical Specification

Capacity (litres): 6,500 ltr

Weight (kg): 220kg

Height (mm): 2710mm

Width (mm): 2190mm

Length (mm): 2390mm

Contact Us

Our team of experts are available and ready to speak to you. You can contact us or call us directly on 0121 351 3230. Available Mon-Friday 8am-5pm.

Related Categories

-Below Ground Rainwater Harvesting Tanks -Best Sellers -Rainwater Harvesting

Further questions?

Our team of specialists are here to help. We install many of our products so can provide real-world advice. We also offer a free take-off service if required.

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