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This filter kit has been designed for roof sizes up to a maximum of 800 sq metres and comprises a Twin Rainwater Filter unit, siphon overflow and calmed inlet.
On entering the filter water is distributed equally across two cascades where cleaning begins, through the cascades, with the largest dirt particles forced across the primary filter cascades directly to the sewer.
Pre filtered water then flows over the secondary filter sieve (mesh size 0,65 mm) where the mesh structure washes any remaining dirt into the sewer.
The clean filtered water is then directed through either connection into the storage tank via a calmed inlet which is designed to undertake a secondary cleaning step by allowing the water to enter the tank with minimal turbulence thereby not disturbing any sediment which may be present at the bottom of the tank. Calmed rainwater entering the tank supplies oxygen to the water resting at the lower end of the tank, keeping it fresh by the prevention of anaerobic decomposition. Finally the overflow siphon, which incorporates a skimming inlet, skims the surface water inside of the storage tank removing further debris, oils and other floating contaminants thereby increasing the quality of the stored water.
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