Flat Tank Rainwater Harvesting System 5000 litre with Mains Back Up DUK2

Flat Tank Rainwater Harvesting System 5000 litre with Mains Back Up DUK2
Flat Tank Rainwater Harvesting System 5000 litre with Mains Back Up DUK2
Product Code: RWH-5099FL-DUK2
Availability: In Stock
Price: £2,880.00
Ex Tax: £2,400.00

Available Options

Vehicle Loading Lid & 635mm Shaft:

Pedestrian Lid & 635mm Shaft:

   - OR -   

The unique F-Line flat tank, supplied complete as a kit.

The F –Line can be used both for internal and external use i.e.;

• Flushing Toilets
• Washing Machines
• Car Washing
• Plant Watering
• Irrigation

• The F - Line Rainwater Harvesting systems are based on the highest quality, rotationally moulded, one piece tanks, installed without the need for concrete, thereby minimising installation costs and supported by our long term 25 year tank guarantee.

How Does It Work

Direct feed systems connect each appliance directly to the submersible pump in the underground tank. The Hydroforce pump (supplied) features pressure sensitivity, so will stay dormant until water is demanded, for example when a toilet is flushed. 

By flushing a toilet, the pump registers a drop in pressure and starts pumping. When the cistern is full, the pump re-pressurises the pipe, shuts itself down and waits for the next demand.


• Minimum 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

• Prefitted filter, Calmed inlet, and overflow siphon

• Automatic mains top up with the Rain Backup in a Box®

The Rain Backup in a Box® is fitted inside the building where the occupiers can see and hear it.


• The control unit is 370mm wide, 270mm high x 100mm deep
• Float switch cable length 10m minimum

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.

External HDPE Rainwater Pipe included. It is important to identify a source of a water supply. Untreated rainwater is not for human consumption and so water companies are recommending (and in some cases requiring) that Black and Green HDPE pipe is used for piping rainwater from the tank to the point of use - eg. garden tap. The point of use should be clearly labelled to show that rain water is the source.

We include 25mm black and green hdpe pipe and labels with this kit with the option to buy further rolls of pipe.

If you require any further advice please call us on 01923 261660

Size Length Width Height tank body Height incl. Entrance shaft Height pump basin Weight Inflow** Overflow**
1500 litre 2400mm 1200mm 650mm 905mm 200mm 80kg 340mm 390mm
3000 litre 2400mm 2400mm 650mm 905mm 200mm 170kg 340mm 390mm
5000 litre 2960mm 2220mm 955mm 1205mm 200mm 250kg 345mm 395mm
7500 litre 3340mm 2310mm 1125mm 1410mm   310kg 345mm 395mm


Click here to see how easy the F-Line is to install

Click here for video on the F-Line

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