90mm Stormwater Backflow Prevention Device – Air Gap
90mm Stormwater Backflow Prevention Device – Air Gap
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Product Details
Product Details
Part Number: TAAG01 (90mm) | Size: 90mm
In some cases, there is a risk of the stormwater system being blocked downstream, causing stormwater to flow back into your valuable rainwater storage. This may cause contamination as the content of the water from the stormwater drain system is unknown.
The Stormwater Backflow Prevention Device (Air Gap) by Blue Mountain Co solves this problem by creating a simple yet effective air gap that prevents stormwater backflow from entering your rainwater bladder tank. Instead of contaminating your stored rainwater, any backflow safely discharges out of the air gap onto the ground.
This device also features a removable mesh mosquito screen to prevent mosquitoes, frogs, rats, and other pests from entering your rainwater tank system through the overflow. Paint it to suit your tank or home for a seamless appearance.
| 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 | 90mm |
| Application | Prevents stormwater backflow from contaminating rainwater tanks |
| Compatibility | Rainwater bladder tanks, above/below ground tanks |
| What's in the Box: Air Gap unit | |
Product Features
Product Features
Documents
Documents
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Part Number: TAAG01 (90mm) | Size: 90mm
In some cases, there is a risk of the stormwater system being blocked downstream, causing stormwater to flow back into your valuable rainwater storage. This may cause contamination as the content of the water from the stormwater drain system is unknown.
The Stormwater Backflow Prevention Device (Air Gap) by Blue Mountain Co solves this problem by creating a simple yet effective air gap that prevents stormwater backflow from entering your rainwater bladder tank. Instead of contaminating your stored rainwater, any backflow safely discharges out of the air gap onto the ground.
This device also features a removable mesh mosquito screen to prevent mosquitoes, frogs, rats, and other pests from entering your rainwater tank system through the overflow. Paint it to suit your tank or home for a seamless appearance.
| 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 | 90mm |
| Application | Prevents stormwater backflow from contaminating rainwater tanks |
| Compatibility | Rainwater bladder tanks, above/below ground tanks |
| What's in the Box: Air Gap unit | |
🍃 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

