Platin Silentio Rainwater Harvesting System 1500-7500 Litres
Platin Silentio Package
Platin XL/XXL Silentio Shallow Dig Domestic/Commercial Rainwater Harvesting System
overflow syphon odour prevention
floating intake vavle
Minimax_Optimax Filter

Platin AA Silentio Rainwater Harvesting System 1500-7500 Litres

£3,532.38£5,150.50 inc VAT

Discover the efficiency of rainwater collection with the Platin AA Silentio Rainwater Harvesting System. Brought to you by Graf, the European market leader in rainwater harvesting, this package is an eco-friendly solution for your non-potable water requirements. It features award-winning internal filter technology and is constructed from 100% recycled plastic. The unique design allows for easy backfill with gravel instead of concrete. Plus, enjoy peace of mind regarding water regulations with our external pump unit that incorporates a Family A Type A air gap. Benefit from free UK mainland delivery on this innovative rainwater tank.


FREE Delivery by Tuesday, 21 May, 2024.


Protecting you


Step into the future of sustainable living with the Platin AA Silentio Rainwater Harvesting System, a pinnacle of innovation from GRAF, the European market leader. This advanced system is designed to fulfil your non-potable water household needs, from toilets and washing machines to garden irrigation and outdoor cleaning.

How It Works:

  • Rainwater Collection: Rainwater is efficiently captured from your roof, travelling through downpipes to the underground tank.
  • Advanced Filtration: As the water enters the tank, it passes through an award-winning filter, ensuring debris-free storage.
  • Efficient Water Management: The system includes a pump and control unit within your property that smartly draws water from the tank on demand.
  • Mains Water Integration: When rainwater levels are low, the system seamlessly switches to mains water, stored in a cistern under the pump, ensuring uninterrupted water supply.
  • Maximised Rainwater Usage: The unique design prevents mains water from topping up the underground tank, maximising rainwater harvesting.
  • Digital Level Indicator: A digital indicator in the tank ensures precise monitoring and control of water levels.

Why Choose the Platin AA Silentio Rainwater Harvesting System?

  • Eco-Friendly Materials: The underground tank is made of 100% recycled plastic, reflecting a commitment to environmental sustainability.
  • Innovative Pump Design: Plus, enjoy peace of mind regarding water regulations with our external pump unit that incorporates a Family A Type A air gap.
  • Installation Ease: The use of gravel for backfilling instead of concrete simplifies the installation process.
  • Delivery Services: Enjoy the convenience of free UK mainland delivery.

Included is the PLATIN telescopic dome shaft Mini Green with a PE lid for pedestrian areas and an option for a vehicle loading lid for vehicle-loaded areas. Embrace the Platin AA Silentio System for a smarter, greener approach to water usage in your home. Images are for illustrative purposes only; there is a possibility that certain products may have been upgraded or replaced with equivalent alternatives.

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

Supplied by Others

  1. 100mm diameter duct pipe to contain; float sensor cable, power cable for the pump, also bringing mains water to underground tank as and when required
  2. 100mm diameter drainage pipe connected from downpipes to the inlet at the top of the tank (all downpipes brought into one pipe for connection to the filter)
  3. 100mm diameter pipe for overflow from the tank to mains drainage network or soakaway

System Benefits

  • Simple & quick to install
  • The AA Silentio is a wall-mounted pump that supplies harvested rainwater on-demand to WCs, washing machines & any external taps
  • The black cistern at the top of the AA Silentio is filled with mains water. The water is drawn from this cistern when the rainwater in the Platin tank is low. This gives the system mains water backup.
  • Innovative float sensor detection on the AA Silentio unit ensures that the household is constantly supplying water to the property but only the amount necessary.
  • Maintenance and servicing of the AA Silentio is straightforward as the pump is located above ground where it can be easily accessed.
  • A reversible flow filter is included in the AA Silentio package, this filter gives the system another level of filtration.
  • The water level reader inside the underground tank relays an accurate reading of the amount of rainwater left in the tank.
  • AA Silentio package comes with a jet wash feature for the filter inside the tank which periodically removes any debris on the filter.

Product Dimensions, Levels & Weights

Platin Tank Dimensions & Weights (1500L – 7500L)

Rain Water Flat Tank 1500L Platin | Download
Rain Water Flat Tank 3000L Platin | Download
Rain Water Flat Tank 5000L Platin | Download
Rain Water Flat Tank 7500L Platin | Download

Platin Tank Levels & Invert Levels

Platin Tank Levels | Download

Platin RWH Tank Invert Levels | Download

Mini & Maxi Lid Dimensions

PE Mini Lid (Pedestrian Loading 371010) | Download

PE Maxi Lid (Pedestrian Loading 371011) | Download

Vehicle Loading Maxi Lid (Vehicle Loading 371052) | Download

Extension piece options

Extension Sleeve (371003) | Download

Extension Sleeve (371015) 1000mm | Download



GRAF Platin RWH Brochure (UK Edition) | Download

Data Sheets

Platin AA Silentio Package | Download


Platin AA Silentio Schematic Layout | Download

Installation & Commissioning

This informative guide covers the following:

  • Loading information
  • Tank coverage heights
  • Excavation dimensions
  • Technical & general data
  • Installation & Assembly

Read the Guide | Download
Read the Guide (Tank Only) | Download

Service Provider Support

GRAF UK has a national service provider network of contractors who can offer various services including the installation of our tank systems.

Coming Soon: New UK map with the service provider/installer contact details.

Delivery Information

Please note the following regarding Graf UK deliveries:

We’re still delivering to our customers safely via our own delivery vehicles & drivers in the main, using external hauliers when required.

This gives us much greater control & flexibility over our deliveries.
Delivery times stated are from receipt of order/payment & may vary subject to tank size & stock availability.

  • Delivery lead time is 5-15 working days for tanks up to 10,000L in size, subject to stock availability.
  • Delivery lead time is 15-25 working days for tanks above 10,000L in size, subject to stock availability.
    Price includes delivery to mainland UK.
    • Please check for deliveries into Cornwall, Mid & Northern Scotland & Isles as additional delivery charges may be applicable.
    • We cannot currently provide a tracking number for all orders but can accept customer enquiries by phone.
    • Off-loading by the customer unless agreed otherwise
  • Tanks up to 1200L are generally delivered by carrier strapped to a pallet for forklift off-loading.
    Tanks up to 7500L are generally strapped to a pallet for forklift off-loading.
  • Tanks 8500L & above are generally supplied with slings for off-loading.
    Please advise if there is restricted access to the site or special delivery instructions.



Weight N/A
Dimensions N/A
Lid type

Pedestrian, Vehicle

Tank size (litres)

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