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RainBankDavid Osborne

General Manager International

Davey Water Products

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To alleviate water supply limitations inmajor metropolitan cities:

Without ground water

Where desalination is not an option

Provide a sustainable household

solution

Mitigate storm water inrush

The Challenge

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Australia has adopted rainwater harvestingas the easiest option, behind public

education and water restrictions

For example:

A 530 gallon tank connected to 1000sq feetof roof area, plumbed to toilets andlaundry can save 40% or 40,000 gallonsof water per year.

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Rainwater tanks have always been part ofthe rural landscape

11% of all Australians drink

rainwater 3% depend 100% on rainwater

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Basic system Rainwater into a tank

Pump to pressurize it

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Basic system Targeted at garden watering

Requires very large tank

Not global micro approach Not effective in homes

Estimated utilisation

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New metro tanks

Had too be smaller due to space No longer supply 100% of water

Needed to have mains water backup Consumers had little experience with

tanks or pumps

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Standard metro plumbing

What substitute watersources are available?

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How do you incorporate rainwater?

?

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Traditional Air - Gap

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Air - Gap

Pump is a critical part of the system Energy is wasted as all water is depressurized

Wont work if electricity is not available Wont allow full capacity of tank to be used

Can be noisy and create water spray

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How else could you incorporate rainwater

?

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RainBankhousehold water savings

A unique solution torainwater recovery and

usage.

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RainBank- World first direct interconnection device =

no air gap- Rainwater as priority with:

- Seamless mains backup- Does not re-pump all water saving energy

- Patented

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- Works when there is:- No Pump

- No Rain water

- No Power

- No mains water

RainBank

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RainBank

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Typical Installations

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Backflow? Technical Solutions Plumbing Industry

Commission: 5: Cold Water Plumbing

AS3500 permits rainwater tankconnection with suitable backflow valve

Low hazard = approved non-testabledevice.

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Legislative actions

Get advice from plumbing officials Draft new Australian Standards

similar to IAPMO

Have RainBank approved to thesestandards - NSF

Lobby to have incentives for adoption

Introduce to plumber inspectors

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Introduction actions

Form relationships with plumbingorganisations

Write training programs

Introduce to retailers

Begin to train the trainers apprentices

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Water savings

Typically 40% of a homes water 506,880,000 g / year

15,056,818,000 Us gallons cumulative Or an additional 1% of Melbourne's entire

water storage

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Finalist in GreenPlumbersWater efficient product of the

year

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Winner in Standards Australia

Design Awards

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Winner in Save Water!

New Product Awards

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Safety?

First flush diverters can reducepossible contaminants

RainBank for non-potable

applications Requires no treatment or extra

filtration

RainBank for potable applications

Requires treatment &/or extra filtration

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Commercial Installations

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Water savings

792,000 US gallons / year Providing close to 100% of our

water requirements

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Key Components Approved and stamped dual check

backflow device Installed with approvals visible

Pressure reducing valve

Set at 30 PSI

Level switch

To stop the pump if rainwater level is low

Low voltage for safety

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Key Components (cont.)

Flow switch

To start the pump when flow is detected

Pump check valve

To stop mains water flowing into therainwater tank

Rated at 145 PSI Control Circuit proven design

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Current options:

Not seamless

Not truly green

Maintenance requiredNot unique

Air gap required

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RainBank is:

SeamlessConvenient

Very low maintenancePatented

No air gap required

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RainBank is:Truly green

Less pump run time

No pump cycling

No re-pumping mains water

Auto mains back-up

Loss of Prime protected

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Support Material

New corporate image

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Support MaterialAd examples:

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Support Material

Public

Exhibitions

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