First Flush Downpipe Diverter
First Flush Downpipe Diverter
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Product Details
Product Details
Improve Rainwater Quality Before It Reaches Your Tank
The First Flush Downpipe Diverter by Blue Mountain Co helps improve rainwater quality by diverting the first, most contaminated flow of water from your roof before it enters your tank. This initial runoff often contains dirt, leaves, bird droppings, dust, and other contaminants collected between rainfall events.
As the diversion chamber fills, an internal sealing ball rises to block the inlet, automatically redirecting cleaner rainwater to your storage tank. A slow-release drain valve then empties the chamber over time, preparing the system for the next rainfall event.
Part Number: WDDP01 | Size: 90mm
Part Number: WDDP02 | Size: 100mm
The system can be customised by adding pipe length to suit your roof size and local conditions.
| Specifications | |
|---|---|
| Brand | Blue Mountain Co |
| Model | First Flush Downpipe Diverter - Original |
| Material | UPVC |
| Colour | White |
| Available Models | WDDP01 (90mm), WDDP02 (100mm) |
| Application | Diverting initial contaminated roof runoff from entering rainwater tank |
| Compatibility | Rainwater bladder tanks, above/below ground tanks |
| What's in the Box: First Flush Diverter unit + all fittings needed for setup (pipe not included – add your own to create storage chamber) | |
Product Features
Product Features
Documents
Documents
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Improve Rainwater Quality Before It Reaches Your Tank
The First Flush Downpipe Diverter by Blue Mountain Co helps improve rainwater quality by diverting the first, most contaminated flow of water from your roof before it enters your tank. This initial runoff often contains dirt, leaves, bird droppings, dust, and other contaminants collected between rainfall events.
As the diversion chamber fills, an internal sealing ball rises to block the inlet, automatically redirecting cleaner rainwater to your storage tank. A slow-release drain valve then empties the chamber over time, preparing the system for the next rainfall event.
Part Number: WDDP01 | Size: 90mm
Part Number: WDDP02 | Size: 100mm
The system can be customised by adding pipe length to suit your roof size and local conditions.
| Specifications | |
|---|---|
| Brand | Blue Mountain Co |
| Model | First Flush Downpipe Diverter - Original |
| Material | UPVC |
| Colour | White |
| Available Models | WDDP01 (90mm), WDDP02 (100mm) |
| Application | Diverting initial contaminated roof runoff from entering rainwater tank |
| Compatibility | Rainwater bladder tanks, above/below ground tanks |
| What's in the Box: First Flush Diverter unit + all fittings needed for setup (pipe not included – add your own to create storage chamber) | |
🍃 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