Fitted to a horizontal drain pipe, it filters
and diverts the rainwater
to a storage tank.
The incoming rainwater flows into an eccentric inlet of the
creating vortex action in the upper chamber before flowing
downwards over the filter screen.
There the rainwater is drawn through the vertically
placed fine filter by adhesion and is led through the
outlet to the storage area, whilst the debris is rinsed
away with the remaining water to drain.