Rainwater Harvesting Systems by BMS
Todays component, the Downpipe, is relatively simple but is a part of the system that is often not fully considered when designing/installing a Rainwater Harvesting system.
To state the obvious the downpipe is the means that rain water is channelled from the roof and gutter of a premises into a holding tank.
Firstly all rainwater coming from the roof area that is going to be used for rain collection needs to be channeled to a single downpipe. This should be the downpipe that is located as close as possible to the rainwater harvesting tank. All other downpipes should be closed off to ensure maximum rain catchement.
The downpipe should also be able to cope with the volume of rainwater falling on the roof and into the gutters.
The downpipe should then be connected to the the leaf filter that is located in a sepearate pit or as an integral part of the rainwater harvesting tank. At this point it is important that the size of the downpipe matches the inlet size of the leaf filter i.e. a DN100 downpipe with a leaf filter that has a DN100 inlet. Other sizes are available.
Next up is one of the most important parts of the system the leaf filter of hydraulic jump filter in the case of the Rainmaster range.
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