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Graf Platin Silentio 7,500 Litre Tank

Regular price
£4,244.40 (£3,537.00 ex VAT)
Regular price
Sale price
£4,244.40 (£3,537.00 ex VAT)
Est. delivery 5-7 working days
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Save money on your water bill by purchasing this NEW Platin Silentio rainwater harvesting tank by Graf. The shallow dig shape of the tank allows it to be installed easily and quickly, as a low excavation depth is required. Award-winning technology is used in the filtration process, making this complete system highly efficient. 

Made from 100% recycled plastic, this tank provides an eco-friendly solution for the use of non-potable water for uses inside and outside of the home. The Silentio range is ideal for large distances between the tank and domestic water control unit, as it reaches up to and including 15 metres.


  • Sustainable product
  • Easy backfill - save money with granular backfill, rather than concrete
  • Award-winning internal filter technology
  • Free delivery 
  • Free commissioning 
  • Control panel displays water level
  • Automatically switches when levels are low
  • Automatic timed jet washing of filter
  • Wide range of applications
  • Ultra-quiet system control
  • Shallow dig - low excavation area

Available with pedestrian or vehicle loading lid. 

View datasheet here

View installation guide here

Full Description

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

The Platin Silentio range offers a shallow dig solution for the installation of a rainwater harvesting tank. A low excavation depth is required, which makes installing the tank easier and cheaper.

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 7,500 litre Platin 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. Maxi Telescopic dome shaft with 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

Technical Specification

Capacity (litres): 7,500 litres

Weight (kg): 360kg

Height (mm): 1565mm

Width (mm): 2250mm

Length (mm): 3600mm

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.

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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