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First Flush In-Ground w/ 300mm Chamber
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 in-ground installation on sloping sites, it uses large-diameter 300 mm pipe to create a high-capacity diversion chamber, and it can turn a "wet" underground pipe system into a "dry" one.
Spare Parts


Features and benefits
Cleaner water for your tank
Keeps fine particles from your roof out of your rainwater system, so your stored water stays cleaner.
Converts a wet system to a dry system
Installed at the lowest point of your underground pipes, it drains the water that would otherwise sit in them between downpours. No standing water underground means fresher water reaching your tank.
Drains automatically between rainfall events
The slow release valve drains your chamber over time, so it's ready when the next rain comes.
Large-diameter chamber
The large-diameter pipe lets you divert more water while using less space.
Customisable chamber, all fittings included
Size the chamber to suit your first flush requirements by adding the right length of pipe. All other fittings are included in the kit.
