Talking Architecture & Design Podcast (Episode 185) - Emma Bombonato on the continuing sustainability journey of the iconic Sydney Opera House Listen Now
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    Kingspan Water & Energy

    Evolution MkIV

    The Evolution MkIV comes with a powerful submersible pump and AcquaSaver Mains/Rainwater switching device. Evolution MkIV is a simpler, more robust design with a slimline appearance.

    When the rainwater tank runs out of water or when there’s a power outage the AcquaSaver will automatically switch to mains supply for appliances.

    Rainwater/mains supply changeover devices are a regular requirement for modern rainwater harvesting services, ensuring consistent water supply, and supporting water efficiency and stormwater management objectives.


    • 5 years warranty.
    • Quick and easy to install.
    • The small, lightweight unit fits neatly on top of the tank instead of the wall with a powerful and reliable submersible pump inside the rainwater tank.
    • Automatically switches to mains water when there is no water present in the tank or during electrical failure.
    • The design standard includes backflow protection.
    • Integrated float switch to prevent pump from running dry at low water levels.
    • The pump is only used when rainwater is being drawn from the tank, it does not operate when the Evolution MkIV unit is switched to mains water.
    • Automatic pump operation.
    • Submersible pumps are quieter than external pumps.
    • Corrosion resistant pump components.
    • Environmentally friendly - saves mains water, reduces flow to  stormwater systems, no re-pumping of mains water.
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