Evolution MkII

The Evolution MkII from Tankworks is the first rainwater harvesting unit designed specifically for new home builders.


By integrating our premium quality steel rainwater tanks with a submersible pump and RainBank controller, the ‘Evolution MkII’ offers the advantage of dramatically reducing the installation time and saving costs, while improving the appearance for the home owner.

Improved Installation


The ‘Evolution MkII’ includes a powerful submersible pump and Davey RainBank mains by-pass controller as an integrated unit. Compression fittings built in to the unit allow a simple connection to the copper tails on the wall. Hook up the inlet line and overflow, plug the power lead in, and the ‘Evolution MkII’ rainwater harvesting unit is completely installed. The ‘Evolution MkII’ will save time and money.

Improved Aesthetic


The home owner will appreciate the improved appearance of the ‘Evolution MkII’ rainwater harvesting system. No longer will the design of the house be compromised by pipes, leads, filters, controllers and brackets attached to their wall.

Improved Performance


The ‘Evolution MkII’ contains a whisper quiet, powerful Davey D42A/B submersible pump that will service both low set and high set homes with ease. When the tank runs out of water, the RainBank controller will open the main line to the internal appliances.
The RainBank electronic mains by-pass controller is very reliable, and has been proven in thousands of installations across Australia.

Available Sizes


The Evolution Series is available in both the Slimline and Round configurations for capacities in excess of 2,000 litres.

Key Benefits

  • RainBank controller mounted in the tank, saving space on the wall of the house
  • A high quality polymer coated steel water tank with 20 year warranty against corrosion
  • The Evolution MkII comes in a wide range of tank sizes to suit builder requirements
  • Available in the full range of Colorbond ® colours
  • High flow, high pressure submersible pump with 2 year warranty
  • RainBank controller with 3 year warranty
  • Corrosion resistant pump components
  • Fully automatic pump and controller operation
  • Services up to 6 taps
  • The powerful pump will deliver 280kPa nominal pressure and a flow rate of 50 lpm

Schematic Diagram


Rough-in Diagram


Data Sheet



Select from a great colour range

Base Colorbond® range

Paperbark®
Galvanised Steel®
Pale Eucalypt®
Windspray®

Painted Colorbond® range

Night Sky®
Headland®
Manor Red®
Jasper®
Sandbank®
Classic Cream®
Surfmist®
Dune®
Shale Grey®
Woodland Grey®
Bushland®
Wilderness®
Cottage Green®
Plantation®
Blue Ridge®
Deep Ocean®
Ironstone®

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