100mm Stormwater Backflow Prevention Device – Air Gap
100mm Stormwater Backflow Prevention Device – Air Gap
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Product Details
Product Details
Part Number: TAAG02 | Size: 100mm
Protect your rainwater from contamination by preventing stormwater backflow – and mosquitoes – from entering your tank through your outlet pipes. The 100mm Air Gap Backflow Prevention Device by Rain Harvesting (Blue Mountain Co) creates a physical gap between your rainwater tank and stormwater lines, ensuring dirty stormwater cannot back up into your valuable rainwater storage.
Includes two removable insect-proof screens for easy cleaning and a raised lower lip on the air gap opening to minimise splashing.
| Specifications | |
|---|---|
| Brand | Blue Mountain Co |
| Model | Stormwater Backflow Prevention Device (Air Gap) |
| Material | Durable UV-stabilised plastic (paintable) |
| Compatibility | Rainwater bladder tanks, above/below ground tanks |
| Size | 100mm |
| Application | Prevents stormwater backflow from contaminating rainwater tanks |
| Compatibility | 100mm overflow pipes on rainwater tanks |
| What's in the Box: Air Gap unit with two removable mosquito-proof screens | |
Product Features
Product Features
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Documents
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Part Number: TAAG02 | Size: 100mm
Protect your rainwater from contamination by preventing stormwater backflow – and mosquitoes – from entering your tank through your outlet pipes. The 100mm Air Gap Backflow Prevention Device by Rain Harvesting (Blue Mountain Co) creates a physical gap between your rainwater tank and stormwater lines, ensuring dirty stormwater cannot back up into your valuable rainwater storage.
Includes two removable insect-proof screens for easy cleaning and a raised lower lip on the air gap opening to minimise splashing.
| Specifications | |
|---|---|
| Brand | Blue Mountain Co |
| Model | Stormwater Backflow Prevention Device (Air Gap) |
| Material | Durable UV-stabilised plastic (paintable) |
| Compatibility | Rainwater bladder tanks, above/below ground tanks |
| Size | 100mm |
| Application | Prevents stormwater backflow from contaminating rainwater tanks |
| Compatibility | 100mm overflow pipes on rainwater tanks |
| What's in the Box: Air Gap unit with two removable mosquito-proof screens | |
🍃 Leaf Eater Series (Original / Advanced / Ultra)
💧 First Flush Downpipe Diverter
🛡️ Air Gap – Stormwater Backflow Prevention
⚡ Hyjet HSJ Series Water Pressure Jet Pump
Please note: As the inlet/outlet of the pump is 1" (25mm), the Rainwater Bladder outlet size must be selected as 25mm to ensure proper connection.
| Small household / light irrigation | HSJ370 (0.5 HP, 55 L/min) |
| Medium household / standard rainwater tank set | HSJ550 (0.75 HP, 70 L/min) |
| Large household / pressure boosting | HSJ750 (1 HP, 80 L/min) |
| High demand / commercial | HSJ1000 (1.5 HP, 85 L/min) |
🔧 General Installation & Maintenance
Freight & Delivery
All orders are processed within 1–3 business days after payment confirmation (Monday–Friday).
Orders placed on weekends or public holidays will be processed on the next business day.
Delivery times depend on when your order is placed relative to our cut-off time: 1:00 PM (UTC+10, Sydney/Melbourne).
Once your order ships, you’ll receive a confirmation email with a tracking number.
Estimated Delivery Times by Location:
- Melbourne Metro: 1–3 business days
- Sydney Metro: 1–3 business days
- ACT: 3–5 business days
- Hobart Metro: 4–7 business days
- Adelaide Metro: 4–7 business days
- Perth Metro: 5–10 business days
- Northern Territory: 10–20 business days
- All Regional Areas: 5–10 business days
Returns
If a product doesn’t fit your application or change your mind, you can return it within 30 days of receiving it.
To be eligible:
- The item must be unused and in its original packaging.
- You’ll need a receipt or proof of purchase.
- To start a return, contact us at sales@fleximake.com.au.
- Customers are responsible for return shipping costs.
- All approved returns are subject to a 10% restocking fee.
- Exchanges are accepted — contact us to arrange.
Refunds
- Once we receive and inspect your return, we’ll notify you if the refund is approved.
- Approved refunds are processed to your original payment method within 7–14 business days.
- Bank processing may take additional time.
- If more than 15 business days have passed since approval, contact us at sales@fleximake.com.au
Damages & Issues
Inspect your order upon arrival. Contact us immediately if your item is defective, damaged, or incorrect, so we can resolve it.
Non-Returnable Items:
- Custom products (special orders or personalised items)
- Hazardous materials, flammable liquids, or gases
- Clearance or final-sale items
If unsure about your item, please contact us for guidance

