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Harlequin 4400 Litre Hydrostore Garden Harvest | GH4400

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Direct Drainage Reviews

 This 4400-litre 'Garden Harvest' rainwater harvesting system is ideal for efficient collection, storage and distribution of rainwater to be used during periods of water scarcity.


Harlequin GH4400 Specification Sheet

Harlequin GH4400 Product Drawing

Harlequin Rainwater Harvesting Systems Brochure

It allows the connection of a hose to the pump within the tank to provide recycled rainwater for irrigating lawns/gardens, car washing and other outdoor water needs. Moulded in one piece from Medium Density Polyethylene (MDPE), this seamless non-corrosive tank with a strong body, an adjustable turret and a calmed inlet can be installed very easily and reduce water costs by 50%. The system complies with EN 16941-1:2018 and Part G of Building Regulations in U.K.

Product Specification

Primary tank
Length 2300mm
Width 1150mm
Height 1250mm
Capacity 1500 litres
Empty plant weight 110kg
Holding tank
Length 2300mm
Width 2300mm
Height 1250mm
Capacity 2900 litres
Empty plant weight 200kg
Other Specifications
Inlet Level 500
Outlet Level 570
Pipework fitting 110
Turret aperture 600
Filter checking interval 12 months

Note: The two-tank systems require a suitable connection between the provided tanks (not supplied) which will depend on the system orientation.


  • Moulded from durable medium density polyethylene material
  • 110mm inlet, outlet and service connections
  • Fully secured 450mm diameter pedestrian duty manhole cover Integrated filter with stainless steel mesh (size 0.7 x 1.7mm)
  • Calmed inlet reduces turbulence to tank sediment, improving water quality
  • Pressure sensitive submersible pump (turns off if no demand), complete with integral run dry protection
  • Pump can deliver up to 3.5bar pressure, with a flow rate of 2500 litres per hour. Max head of 35m (nominal) and power rating of 800W.
  • U-bend type overflow also acts as a rodent trap
  • Supplied with a 25m coil of 25mm HDPE pipe and 1” pump connections
  • Moulded-in handles for ease of lifting
  • PE tank is lightweight, corrosion resistant and made from 100% recyclable material 


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