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F-Line 5000 Litre Tank

F-Line 5000 Litre Tank

F-Line Flat Tank 5000 litre underground garden rainwater harvesting system tank. The larger F-Line flat shallow dig tank, supplied ready for use as a garden rainwater harvesting tank. Collect and store cooled rainwater for your valuable garden plants or build a kit for household use.

More details...

£ 1,890.91

Tax excluded

Full Product Details

F-Line Flat Tank 5000 litre shallow dig underground tank with accessory options

Why buy this tank?

  • The F-Line bigger 5000 litre is a high quality, rotationally moulded, one piece rainwater tank that can be installed without the need for concrete, thereby minimising installation costs and supported by our long term 25 year tank guarantee.
  • Minimal installation depth
  • Easy and quick to install
  • Small excavation pit and little earth excavation preserves your garden
  • Ideal for installation in new or existing properties
  • Can be installed in ground water up to tank shoulder
  • Price includes Mainland UK delivery.  

Easy to install

The F-line flat tank can be installed into much higher water tables than a standard round tank. If you don't know what your water table will be like in the winter, you're safer to install a flat tank. The F-Line tanks are flat and the installation depth is 60% less than other rainwater tanks. The excavation can be up to 70% less, meaning little earth excavation, easy handling and less cost for you! The small excavation pit is easily filled in and your garden will look just like it did before. The pics below show a 1500 tank as an example to illustrate the work required, obviously 3000 - 7500 litre tanks have different dimensions but they are still 'shallow dig'.

 Click on this image to see the whole installation

Technical Details

Size 1500 3000 5000 7500
Weight Kg 80 170 250 310
Length 1200 2400 2960 3340
Width 2400 2400 2220 2310
Overall Height* 1015 - 1415 1015 - 1415 1350 - 1750 1415 - 1815

Ground to Invert**

335 - 735 335 - 735 335 - 735 330 - 730
Invert to Outlet 162 162 162 162


Size 1500 3000 5000 7500
Length 1600 2800 3360 3740
Width 2800 2800 2620 2710
Overall Height* 1115 - 1515 1115 - 1515 1450 - 1850 1515 - 1915

*Overall height allows for 100mm compacted aggregate

**Using a VS60 (635mm Shaft)

The overall height difference above is because up to 400mm can be cut off the 635mm shaft on site so as to achieve your exact invert level.

What about In-Tank Filtration?Optional F-Line Tank filter set

The F-Line Tank comes with the option of an In Tank Filtration pack. The set has all the components needed to filter the rainwater as it enters your tank and drain any surplus to your overflow.

The fine filter filters dirt particles, before they reach the tank. The filter cartridge can simply be taken out for maintenance and can be easily cleaned.

All the parts are pre-mounted ready for connection. To buy this option see the drop down menus below or call 01733 405111.

Which tank size for the garden irrigation?

Pure Garden irrigation (rough guide) Connected roof surface area> Tank size in litre
Up to approx. 100m2 garden area min 20m2 1000-1500
Up to approx. 300m2 garden area min 40 m2 2500-3000
Up to approx. 500m2 garden area min 70m2 3000-5000
Up to approx. 800m2 garden area min 90m2 5000-7500
Up to approx. 1000m2 garden area min 100m2 7500-10000

Choose your optional extras using the drop down menus.

  • Image 1 Walk On Lid
  • Image 2 235mm Shaft for ultra light excavation
  • Image 3 635mm Shaft for deeper below ground
  • Image 4 600mm Spacer Ring for support with deeper installation
  • Image 4,5 & 6 Steel Shaft & Iron Cover set (for vehicle loading)

You will need a Walk-On Lid and 235mm shaft as a minimum as you don't want anyone falling in the tank - the alternatives parts are for deeper excavation or vehicle strength lid and shaft for a can always call 01733 405111 for details

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