• Graf Carat Silentio 8,500 Litre Tank
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Graf Carat Silentio 8,500 Litre Tank

£5,340.00 (£4,450.00 ex VAT)
£5,340.00 (£4,450.00 ex VAT)
Est. delivery 5-7 working days
Loading Lid

The Silentio 8,500 Litre Rainwater Harvesting Tank by Graf provides an efficient and sustainable solution for non-potable water applications, including WCs, washing machines, and external taps. Designed for installations up to 15 metres away from the property, this innovative system ensures reliable water reuse while reducing household water bills.

Manufactured from 100% recycled plastic, the Silentio tank is an eco-friendly choice that combines sustainability with superior performance. Its shallow-dig design reduces excavation time and cost, and its award-winning filtration system ensures clean and efficient rainwater utilisation.

Benefits:

  • Sustainable design made from 100% recycled plastic
  • Easy installation with shallow dig and granular backfill (no concrete needed)
  • Award-winning internal filter technology
  • Free delivery and commissioning included
  • Control panel clearly displays water level
  • Automatic low-level switching and timed filter jet cleaning
  • Ultra-quiet system operation
  • Wide range of domestic and commercial applications

Available with either a pedestrian or vehicle-loading lid for flexibility in installation.

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 8,500 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

RWH8500-G/CSP

Technical Specification

Capacity (litres): 8,500 ltr

Weight (kg): 380kg

Height (mm): 2695mm

Width (mm): 2040mm

Length (mm): 3500mm

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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