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 Home : Garden Irrigation : Rainwater Harvesting Systems : Graf Modular Tanks
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Rainwater Harvesting Systems With rainfall in the UK being 18 times the net consumption of the population, rainwater harvesting can provide a popular and viable environmental addition to our household water supplies. Most rainwater harvesting systems are designed for new builds, where there is clear ground and easy access, but they are rarely a practical option for established properties. Our systems are developed with the flexibility to cater for these differences as well as the requirements of the garden, to come up with solutions that actually work. Designed with the needs of the contractor in mind, our systems are made up of a series of top quality modular components that fit together, are easy to install and are targeted specifically for garden use. | Graf Modular Tanks These modular tanks from Graf are designed to be connected together to make it easy to increase the storage area of your rainwater harvesting system, which is particularly beneficial where large volumes of water are required for irrigation. They are manufactured as two easy to handle half shells, which can be stacked on top of each other for shipping, as well as saving space on site. The patented quick connection system, which has been laboratory tested to last more than 25 years, allows the tanks to be easily assembled (without any screws or bolts) in a matter of minutes, and uses a combination of a unique EPDM seal and sophisticated location pins. The moulded design of the tank makes it light yet very strong and stable. |
| Graf Herkules-Tank and Accessories Each Herkules tank provides storage for 1600 litres of rainwater, and can be installed either above or below ground. By joining a number of tanks together, large volumes of water can be harvested, making them ideal for use with irrigation systems. | | Code | Description | Price | Quantity | Add to basket | | RNT2210 | Graf Herkules tank - green - 1600 litres Min Ø 1090mm, max Ø 1350mm, height 1600mm (approx) | £413.28 | | | | RNT2410 | Graf Herkules-Tank dome Length 1000mm; with telescopic end 1m long; for use on below ground installation | £70.32 | | | | RNT2310 | Graf Herkules-Tank support pipe To support the tank when the water level reduces; required for underground installation when the tank is covered with soil | £31.96 | | | | RNA4040 | Tank connection kit - DN100 | £63.92 | | | | RNA8440 | Cut-out tool (with pilot drill) for DN100 pipe | £81.04 | | | We charge extra for delivery (at cost) on all tanks and tank packages | | | Associated Products | | Pump Packages | | | Downpipe Filters | | | Mains Water Top-up Kit | | | Rainsaver Rainwater Pump Set | | | Drainage Pipe & Soakaways | |
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| | Alternative Products | | Rainwater Harvesting Systems | | | Graf Top-Tank and Accessories | | | Graf Underground Modular Tanks & Accessories | | | Above Ground Tanks & Tank Packages | | | Control Packs & Tap Controllers | |
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|  | | Easy to move thanks to their low weight of 30kg and their half shell design, they will fit through doorways as small as 800mm wide. |  | | Permanently watertight due to using a unique durable EPDM seal that has been laboratory tested to last more than 25 years. |  | | This system allows the tanks to be easily assembled (without any screws or bolts) in a matter of minutes. |  | | The tanks have moulded connection points so multiple tanks can be joined using the connection kits. |
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| | | Graf Top-Tank and Accessories With each tank holding 1300 litres, the Top-Tank is designed for above ground use only, and like the Herkules, they can be easily joined together to provide substantial rainwater storage. | | Code | Description | Price | Quantity | Add to basket | | RNT3210 | Graf Top-Tank - green - 1300 litres Min Ø 940mm, max Ø 1160mm, height 1600mm (approx) | £238.53 | | | | RNA4030 | Tank connection kit - DN70 | £42.03 | | | | RNA8430 | Cut-out tool (with pilot drill) for DN70 pipe | £25.32 | | | We charge extra for delivery (at cost) on all tanks and tank packages | | |  | The tanks have moulded connection points so multiple tanks can be joined using the connection kits. |
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| | Associated Products | | Pump Packages | | | Downpipe Filters | | | Mains Water Top-up Kit | | | Rainsaver Rainwater Pump Set | | | Drainage Pipe & Soakaways | |
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| | Alternative Products | | Rainwater Harvesting Systems | | | Graf Herkules-Tank and Accessories | | | Graf Underground Modular Tanks & Accessories | | | Above Ground Tanks & Tank Packages | | | Control Packs & Tap Controllers | |
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|  | | Easy to move thanks to their low weight of 30kg and their half shell design, they will fit through doorways as small as 800mm wide. |  | | Permanently watertight due to using a unique durable EPDM seal that has been laboratory tested to last more than 25 years. |  | | This system allows the tanks to be easily assembled (without any screws or bolts) in a matter of minutes. |
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