First Flush In-Ground w/ 300mm Chamber

A high volume first flush diverter, designed specifically for inground applications. Divert the dirtiest water and transform your rain harvesting system from “wet” to “dry” with this large volume inground first flush diverter. This design uses large diameter, 300mm pipe to create the first flush diversion chamber - it's a straight forward design that's been trusted for years.

Divert contaminated water

Divert contaminated water

Prevents organic and inorganic fine particles from your roof entering your rainwater system.
It works automatically

It works automatically

Slow Release valve automatically drains your chamber over time so you are ready for the next rainfall event.
Divert Large volumes of water, easily

Divert Large volumes of water, easily

The large diameter pipe allows you to diverter move water, while using less space.
Just add pipe

Just add pipe

We include all fittings you need to set the system up. Just add the pipe to create the storage chamber.
SKU :
#002f6c
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First Flush In-Ground w/ 300mm Chamber
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Benefits

Keep the dirtiest water out

By capturing and discarding the dirtiest, most contaminated water from your roof, this first flush diverter reduces the load on your pumps and filters and helps keep hazardous organic and inorganic matter out of your tank so your water remains fit-for-purpose.

Benefits

Prevent anaerobic fermentation

In-Ground diverters periodically drain the water-filled pipes in your “wet” rain harvesting system to prevent anaerobic fermentation and stop fermented water contaminating the rainwater in your tank. This drained water can then be released or used to water your garden.

Benefits

Customise for your needs

Easily customise the first flush diverter’s diversion chamber volume to suit your needs before installing it beneath your garden for maximum space efficiency. You can also customise the destination for drained water and connect the diverter to as many downpipes as necessary.

Benefits

Divert large volumes of water, easily

By using large diameter 300mm pipe to create the first flush diversion chamber, you are able to diverter move water, while using less space.

Each meter of length in the diversion chamber will yield 72L diversion. We can help you calculate your first flush diversion needs using our online tool here.

Benefits

Keep the dirtiest water out

By capturing and discarding the dirtiest, most contaminated water from your roof, this first flush diverter reduces the load on your pumps and filters and helps keep hazardous organic and inorganic matter out of your tank so your water remains fit-for-purpose.

Benefits

Prevent anaerobic fermentation

In-Ground diverters periodically drain the water-filled pipes in your “wet” rain harvesting system to prevent anaerobic fermentation and stop fermented water contaminating the rainwater in your tank. This drained water can then be released or used to water your garden.

Benefits

Customise for your needs

Easily customise the first flush diverter’s diversion chamber volume to suit your needs before installing it beneath your garden for maximum space efficiency. You can also customise the destination for drained water and connect the diverter to as many downpipes as necessary.

Benefits

Divert large volumes of water, easily

By using large diameter 300mm pipe to create the first flush diversion chamber, you are able to diverter move water, while using less space.

Each meter of length in the diversion chamber will yield 72L diversion. We can help you calculate your first flush diversion needs using our online tool here.

Product Installation, Maintenance and Information

Yes
Yes
Yes

Specifications

All measurements are in mm unless specified otherwise

Click the drawing to view it in full size

Pipe Fitment

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First Flush Calculator by Rain Harvesting

First Flush Calculator

Easily calculate how much water you need to divert and discover which First Flush Diverter is right for you.

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