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10000L Platin Shallow Dig AA Silento Rainwater Harvesting System | G70460

£5,415.00
£6,498.00 (inc VAT)
£5,415.00 (exc VAT)

FREE UK 
DELIVERY

CUSTOMER OFFLOADING

RAINWATER
HARVESTING

Quantity

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Product Description

    This product is delivered directly from the supplier, lead times vary.

     

      The Platin AA Silentio 10000 Litre Rainwater Harvesting System is a premium rainwater recycling solution designed to reduce mains water consumption and maximise the use of free harvested rainwater. Manufactured by GRAF, Europe's leading rainwater harvesting specialist, this advanced system supplies filtered rainwater to toilets, washing machines, garden irrigation systems and outdoor taps, helping to lower water bills while reducing environmental impact. At the heart of the system is the innovative Platin underground tank, manufactured from 100% recycled plastic and designed for quick, cost-effective installation. Its shallow profile requires less excavation than conventional underground tanks and, in most ground conditions, can be backfilled using gravel rather than concrete.

      The AA Silentio control unit continuously monitors water levels and automatically manages the switch between harvested rainwater and mains water backup. When rainwater levels fall below a pre-set level, the system seamlessly changes over to mains water via an integrated cistern and 3-way valve arrangement. Once rainfall replenishes the tank, the unit automatically returns to using stored rainwater. Featuring a microprocessor-controlled management system, digital tank level monitoring and automatic filter cleaning, the AA Silentio provides reliable, efficient and low-maintenance operation all year round.

       

      Key Features

      • 10,000 litre underground rainwater harvesting system
      • Supplies toilets, washing machines, garden irrigation and outdoor taps
      • Intelligent microprocessor-controlled operation
      • Automatic changeover between rainwater and mains water
      • Digital tank level monitoring
      • Award-winning filtration technology
      • Automatic jet-cleaning filter function
      • Wall-mounted AA Silentio pump and control unit
      • Family A Type A air gap for WRAS-compliant mains water protection
      • Manufactured from 100% recycled plastic
      • Shallow dig tank design reduces excavation costs
      • Gravel backfill installation in most applications
      • Free UK mainland delivery

       

      Installation Manual
      Schematic GRAF
      Data Sheet GRAF

      SKU: TANRAINGRA023

      Why Choose Direct Drainage for Rainwater Harvesting?

      Free Tank Delivery

      Tanks ship direct from the manufacturer, with lead times varying by product.

      Best Price Guarantee 

      Found the same tank cheaper? Send us the quote and we’ll try to match it.

      Sustainable Water Solutions

      Collect, store and reuse rainwater for irrigation, domestic and commercial applications.

      Expert Tank Support

      Need help choosing the right tank? Call our team on 01388 537050.

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      CUSTOMER REVIEWS

      Rated 4.8/5 by Direct Drainage Customers

      Based on over 600 verified reviews

      VERIFIED REVIEW

      Very helpful from the start to the finish

      Items were despatched quickly and arrived the next day. Would recommend.

      Title

      North Hayne Farm Cottages | 26 June 2026

      VERIFIED REVIEW

      Cheapest price I could find for the pump

      Cheapest price I could find for the pump and delivery the next day what more could you want.

      Title

      Sam Jukes | 5 November 2025

      VERIFIED REVIEW

      Great service!

      I ordered a septic tank it was delivered within a week and the delivery driver left it in the exact right place and time. Would definitely use this company again, thanks so much.

      Title

      Eve Harland | December 2025

      OFFICIAL SUPPLIERS OF:

      FAQs

      Everything you need to know about rainwater harvesting systems, water storage tanks and sustainable water reuse.

      What is a rainwater harvesting system, and how does it work?

      A rainwater harvesting system collects and stores rainwater, typically from building roofs, for reuse in suitable non-drinking water applications.

       

      Rainwater is directed through gutters and downpipes into a storage tank, often passing through a filter to remove leaves, debris and other contaminants.

       

      Depending on the system, the collected water can then be supplied to garden irrigation systems, toilets, washing machines or other suitable applications.

       

      Our range includes complete rainwater harvesting systems, underground storage tanks and accessories for domestic, commercial and agricultural use.

      What can harvested rainwater be used for?

      Harvested rainwater can be used for a variety of non-potable applications, helping reduce reliance on mains water.

       

      Common uses include:

      • Garden watering and landscape irrigation.
      • Toilet and urinal flushing.
      • Vehicle washing and outdoor cleaning.
      • Agricultural irrigation.
      • Washing machines, where supported by a suitable system.
      • Certain commercial and industrial applications.

      The intended use will determine the type of rainwater harvesting system, filtration and pumping equipment required.

       

      Harvested rainwater should not be used for drinking or food preparation without appropriate treatment and verification of water quality.

      What size rainwater harvesting tank do I need?

      The correct rainwater harvesting tank capacity depends on your property's roof area, local rainfall levels, available installation space and expected water consumption.

       

      For example, a system used exclusively for garden irrigation may require a different storage capacity from one supplying toilets and washing machines throughout a property.

       

      Our range includes smaller rainwater storage tanks alongside larger-capacity systems for domestic, commercial and agricultural applications.

       

      When choosing a tank, it's important to consider both the amount of rainwater you can collect and how much you expect to use.

       

      If you're unsure which capacity is suitable, our team can help you identify an appropriate product.

      What is the difference between an above-ground and underground rainwater harvesting tank?

      Above-ground and underground rainwater harvesting tanks provide different storage solutions depending on your available space and installation requirements.

       

      Above-ground tanks are typically easier to access and are commonly used for garden watering, irrigation and general outdoor water storage.

       

      Underground tanks are installed below ground level, allowing larger quantities of rainwater to be stored without occupying valuable surface space.

       

      Underground systems are particularly popular for new-build properties, landscaping projects and complete domestic rainwater harvesting installations.

       

      The best option depends on your required capacity, available space, intended use and installation conditions.

      Can rainwater harvesting systems reduce my water bills?

      Yes. Rainwater harvesting systems can help reduce mains water consumption by collecting and reusing rainfall for suitable non-potable applications.

       

      Using harvested rainwater for activities such as toilet flushing, garden irrigation and vehicle washing can reduce the amount of treated mains water required.

       

      However, actual savings depend on rainfall, storage capacity, water usage, system efficiency and whether your property has metered water charges.

       

      Some systems also require electricity for pumps and regular maintenance.

       

      Choosing an appropriately sized system is important for achieving practical long-term water savings.

      Do rainwater harvesting systems require maintenance?

      Yes. Regular maintenance helps ensure rainwater harvesting systems continue operating efficiently and reliably.

       

      Maintenance may include inspecting and cleaning filters, removing accumulated debris, checking pumps and inspecting tank connections.

       

      Underground and above-ground systems may have different maintenance requirements depending on their design and components.

       

      The frequency of maintenance depends on the system, surrounding environment and amount of debris entering the collection area.

       

      Always follow the manufacturer's maintenance instructions to help maintain water quality and reliable system operation.

      How much is delivery, and when will my rainwater harvesting system arrive?

      Many of our rainwater harvesting tanks and systems are supplied directly from the manufacturer, with delivery lead times varying depending on the product and availability.

       

      Free delivery is available on eligible products to most mainland UK postcodes, although additional charges or restrictions may apply.

       

      Larger tanks and systems may require specialist transport, suitable delivery access and appropriate offloading equipment.

       

      For current availability, delivery information or an estimated lead time, please contact our team on 01388 537050.