SUPADIVERTA - syphonic rainwater diverter

FEATURES

FIRST FLUSH DIVERTER

First flush is the dirty water that is washed from the roof and gutters when it first rains. First flush diverters are commonly used to capture this initial roof wash but many fixed volume first flush diverters have endemic problems including dripper blockages and small capture volumes.

AQUATREK has designed a simple and efficient first flush kit that fits below the Supadiverta middle (flush) outlet.

Features and benefits include:

• Neat and easy installation.
• Designed for 100mm (102mm I.D.) DWV pipe which holds 8.2 litres per metre in preference to thinner walled 90mm PVC pipe (86mm I.D.) which has an internal volume of 5.8 litres per metre.
• The flush chamber is not subject to a venturi that would draw and recycle the captured flush, eliminating the need for the ball float normally used to seal flush chambers when full. This allows any debris that passes through the 750 micron filter and falls to the reservoir floor to be diverted to flush throughout the entire rain event.
• The supplied 19mm inline tap is manually opened to drain the flush chamber. The tap also allows the manual diversion of additional first flush during times of higher contaminant concentration after dry periods.
• The inline tap also eliminates the small drip outlet common to other diverters. Small drip apertures frequently block, requiring manual extraction of collected flush debris and sediment. This messy and high maintenance regime is avoided with the Supadiverta flush kit.

Rainwater quality and the retardation of tank sediment build up improves substantially when solid bird droppings and other particulates are continuously diverted by the SUPADIVERTA internal 750 micron divert filter.

NOTE: Fit the inline tap to a horizontal section of 19mm polypipe to prevent sediment sitting on the tap’s internal turning mechanism.

The supplied 5 mm hose vents the flush chamber and must be fitted as per the supplied instructions.

More detailed information can be found at:

Before Supadiverta

Leaf and debris filter

Practical reality

Diverter filters

SUPADIVERTA FLUSH KIT

CUSTOMER TO SUPPLY: Required length of 100mm DWV pipe

For quality rainwater harvesting, gutters must be regularly cleared of leaves and debris.

Help the environment by diverting the bottom section of downpipe to a Rain Garden which filters the water before returning it to storm water. Learn more about rain gardens here.

Some States encourage homeowners to divert storm water to rubble pits and soak wells to recharge the ground water. Home owners need to be aware of local regulations.

NOTE: If diverting to a tank and the Supadiverta’s overflow has been height adjusted to substitute as the tank’s overflow, the Supadiverta may retain water in the internal reservoir when the tank is full. If the flush chamber is drained under these circumstances, it will refill when water backflows from the tank back into the reservoir.

To drain; close the tank’s infeed valve and drain off the first flush. The infeed valve can then be opened once the tank’s level has dropped below the level of the Supadiverta outlets.

DIY FULLY AUTOMATED FIRST FLUSH OPTION
(FOR THE BUDDING INVENTOR)

Aquatrek briefly toyed with the possibility of an optional automated first flush system. The idea was to power a solenoid valve from a home irrigation controller to time control the first flush to drain for short periods at regular intervals.
Numerous solenoid valves were deemed not suitable because of the sediment content in the flush but we found the IRRITROL ULTRA FLOW 700 SERIES SOLENOID VALVE showed promise during our very limited testing. This valve has a straight through flow path design, is available in 20mm female BSP which accept either a 20 mm PVC valve socket or a 20 mm poly barbed director and has a 24V AC solenoid coil.

We also found a similar search for a suitable valve on another website. The website found a direct acting valve with different voltage versions available and details can be found at:
http://www.franksworkshop.com.au/GWS/Phase1/Phase1.htm

Look for N526, N527, N528 and N530 on this price list:
http://www.automationdirect.com.au/Welcome/pricelist/2wayvalvespricelist.pdf

If there are any budding inventors reading this that want to experiment with an automated flush draining system, we would be keen to post your findings with acknowledgment or link to your site(s) as a service to others provided the system(s) is/are easily understood and implemented. To our knowledge, there is no automated system available and we have no plans to develop one but we would be pleased to pass on any relevant information.

Is there anyone out there?