Products First Flush Delta Post/Wall
First Flush Delta Post/Wall
User Manual(Incl. GST)
Get cleaner rainwater into your tank. Between downpours, dust, leaves and animal droppings can settle on your roof. When the rain returns, the first flush of water washes them off, and your first flush diverter sets it aside to keep it out of your tank. So only the cleaner water that follows is stored. Designed for wall or post mounting, the Delta's manifold design creates a high-capacity diversion chamber from standard 100 mm pipe, so it's easy to source and assemble. Its patented Catch-All Tee captures more of the first flush than a basic tee.
Features and benefits
Delta manifold design
Easily divert large volumes of water with Delta’s unique manifold design, which only requires you to use smaller diameter pipe.
Catch-All Tee improves clean water yield
The patented Catch-All Tee incorporates a unique flow direction feature that directs fast-flowing water into the diversion chamber, preventing the dirtiest water from entering your tank. In a medium rainfall event, 97% of the first flush is diverted.
Control how often it drains
The Electronic Release Valve lets you control how often your first flush diverter drains, so you can fine-tune the balance between water quality and quantity.
Anti-clog valve design
The large opening on the valve reduces the chance of clogging when compared to a traditional slow release valve.
Easy to size for your roof
Every 1 metre of Delta chamber holds 73L, making it simple to size for your roof catchment.
Product Support resources
Frequently asked questions
What's in the box?
What else will I need to install it?
What downpipe size does it fit?
How much does it divert, and can I adjust it?
How do I clean and maintain it?
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First Flush Delta Post/Wall
Size & Fitting
Pipe Size
100mm - WDPW10
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