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  • About
    • GRAF Australia
      • Our Mission and Values
      • Our Team
      • Accessibility
    • Sustainability
    • GRAF Germany HQ
  • Products
    • Rainwater Solutions
    • Stormwater Solutions
    • Wastewater
    • Trade waste
    • Grease
    • Pump stations
    • Surface drainage
    • Pre treatment
    • Geotech solutions
    • Access covers & frames
  • Technical Solutions
    • Blogs
    • Video Gallery
    • FAQs
    • Case Studies
  • Resources
    • Downloads
    • Brochures
    • BIM Data
    • Certifications/Approvals
    • Dimension drawings
    • Installation instructions
    • Specification sheets
    • Standard details
  • Service/Install
    • Design
    • Supply
    • Commissioning
    • Maintenance
  • Design Tools
    • Hauraton
    • COSMA
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    Home Products Rainwater Underground tanks

    Carat

    The new generation of Carat rainwater tanks has been specially developed for rainwater harvesting. Easy to transport due to stackable design and low weight.

    Logistical advantages of the Carat tank

    The Carat tank consists of two half shells which can be stacked on top of each other, allowing multiple tanks to be stacked on a single pallet for shipping. For example, it is possible to stack five 6,500 ltr Carat tanks, or nine 2,700 ltr Carat tanks on a single pallet. This allows a standard 40 ft. Shipping container to house a total tank volume of up to 130,000 ltrs! The tanks unique stacking feature reduces transport costs and environmental impact from vehicle emissions, whilst allowing shipments to any destination in the world.

    Easy and safe assembly

    • The patented quick connection (illustrated in green), allows the Carat tank to be assembled in only a few minutes. Disassembly is possible at any time.
    • The first-class EPDM material used in the profile sealings (illustrated in yellow), has been laboratory tested. It lasts more than 25 years.
    • The centering bolt (illustrated in orange) assures the accurate and easy assembly of the two half shells preventing any leaks.

    More advantages

    • Highest stability and unique fitting accuracy thanks to new production processes.
    • Consistent quality due to constant production monitoring.
    • Suitable for up to 12 tonne vehicle loading (when combined with the Telescopic cast iron cover).
    • Groundwater-stable up to the middle of the tank thanks to the extremely stable construction (more water stability options for higher water table on request).
    • Investment security thanks to 15-year warranty – compare it!
    • Can be expanded as often as required.

    Application:

    • Global innovation – the new generation of the Carat rainwater underground tanks has been specially developed for rainwater harvesting.
    • The Carat tank can be individually tailored to your needs as a garden or house tank using the interconnection system.

    Sizing

    Volume (I)Length (mm)Width (mm)Height (mm)Weight (kg)
    2700208015652010120
    3750228017552200150
    4800228019852430185
    6500239021902710220

    Technical details

    Accessibility

    Earth covering with loading capacity [mm]800-2000

    max. axle load [t]8

    max. vehicle weight [t]12

    max. vehicle weight with reinforced concrete slab [t]60

    Groundwater installation

    Earth covering with groundwater installation [mm]800 – 1800

    Installation

    max. earth covering [mm] (without groundwater, vehicle loading)

    About us

    GRAF Australia acknowledges the Traditional Owners of Country throughout Australia, and pay our respects to Elders past, present and emerging.

    GRAF International Headquarters

    Phone: +61 1300 131 971

    Fax: +61 08 6499 2688

    Usefull links

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    Locations

    Head Office (WA)
    43B Sparks Road (Rear Building)
    Henderson 6166 WA

    Postal Address
    PO Box 1182, Bibra Lake,
    WA 6965

    Distribution Centre (VIC)
    1/965 Duncans Road
    Werribee South 3030 VIC
    Direct +61 8 6499 2624

    Distribution Centre (QLD)
    Unit 1, 10-12 Claude Boyd Parade
    Bells Creek 4551 QLD

    Distribution Centre (SA)
    26 Briens Road
    Northfield 5085 SA

    Distribution Centre (NSW)
    650 Wallgrove Road
    Horsley Park 2175 NSW

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