SUPADIVERTA - syphonic rainwater diverter

FEATURES

THERE ARE TWO TYPES OF DOWNPIPE DIVERTER FILTERS

ENTRAPMENT FILTERS

These allow 100% water passage (unless blocked) and trap impurities for later removal. These are rarely used unless they have large surface areas as blockages decimate harvesting yield and the very worst contaminants; bird droppings for example, are most often washed through. Cleaning requirements make these filters high maintenance.

DIVERT FILTERS

These sacrifice water yield to flush debris and enable a self cleaning function. A water yield of 90% is considered exceptional but poor design and debris bonding to the filter surface will severely effect yield. By definition, divert filters function best when set on a steep incline but this is difficult when water falls vertically.
Divert filters provide cleaner harvested water by eliminating the wash through effect.

The following are major contributors to DIVERT FILTER yield loss and are easy to recognise.

• Low percentage open area mesh.
• A filter set at a low angle often promotes debris bonding to the mesh.
• Filters with blanked sides. As diverters are rarely mounted perfectly level, these provide an impenetrable valley along the filter and side wall intersect for water to flow to the drain.
• Water flowing down a downpipe can continue down some diverters inner walls. This is due to the natural flow of water down a downpipe’s inner walls, resulting in a lot of water not falling directly on the mesh but splashing onto and flowing over the mesh to the drain.

TO FIND A SOLUTION, WE MUST UNDERSTAND THE PROBLEM!

AQUATREK researched solutions to endemic yield losses and blockages, then used the research data to develop an integrated prototype we now call SUPADIVERTA.

SUPADIVERTA AVERAGE WATER YIELD IS 97+%

INLET

• The fluent flow through design eliminates dead ending, allowing high volume transfer.
• 20 degree V floor section channels and centralises water flow.
• Ribbed floor stops a `slippery dip’ effect occurring when water flows from one side of a downpipe (which is common). Without this feature, water can flow onto and down the side walls. The ribs are also angled to direct water to the centre of the filter.
• A scavenge lip prevents water from flowing by surface tension under the inlet and arcing to the downpipe. The lip instead directs this water to the filter’s bottom meshed section where it intercepts water flowing down the filter surface.

SELF CLEANING FILTER

• 750 micron high percentage open area mesh.
• Set at 50 degree angle.
• Projections on splash platforms prevent debris bonding to the filter mesh.
• Filter has raised side walls with inside of wall intersecting the SUPADIVERTA body at a 70 degree angle. This directs water directly onto the filter mesh.

WATER HARVESTING IS AN IMPORTANT CONSERVATION MEASURE THAT IS SUPPORTED BY GOVERNMENT FINANCIAL INCENTIVES. DOWNPIPE DIVERTERS ARE ENCOURAGED BY GOVERNMENT REBATES IN SOME STATES AND THEIR USE IS MANDATORY IN SOME AREAS WHERE CERTAIN CONDITIONS APPLY. AQUATREK BELIEVES A VERIFIED MINIMUM WATER YIELD AND PERFORMANCE RATING SHOULD APPLY TO ELIGIBLE REBATE PRODUCTS. THIS WOULD BENEFIT CONSUMERS, PROMOTE MORE EFFICIENT PRODUCT DESIGN AND DEMONSTRATE WISER USE OF TAXPAYERS MONEY.