The Rain Harvesting First Flush Downpipe Diverter takes the first flow of water which may contain contaminants from the roof and gutters, seals it off, then automatically diverts the remaining flow to the tank. First Flush Diverters help divert the first flush, through their design. They are installed using a T junction or high flow inlet to which the diversion chamber is fitted. As the chamber fills with the initial dirty water from your roof, a ball rises until it seals the inlet, allowing the rest of your rainwater, which is much cleaner, to flow directly to your tank.
The Rain Harvesting First Flush Downpipe Diverter takes the first flow of water which may contain contaminants from the roof and gutters, seals it off, then automatically diverts the remaining flow to the tank. First Flush Diverters help divert the first flush, through their design. They are installed using a T junction or high flow inlet to which the diversion chamber is fitted. As the chamber fills with the initial dirty water from your roof, a ball rises until it seals the inlet, allowing the rest of your rainwater, which is much cleaner, to flow directly to your tank.
The Rain Harvesting First Flush Downpipe Diverter takes the first flow of water which may contain contaminants from the roof and gutters, seals it off, then automatically diverts the remaining flow to the tank. First Flush Diverters help divert the first flush, through their design. They are installed using a T junction or high flow inlet to which the diversion chamber is fitted. As the chamber fills with the initial dirty water from your roof, a ball rises until it seals the inlet, allowing the rest of your rainwater, which is much cleaner, to flow directly to your tank.
The Rain Harvesting First Flush Downpipe Diverter takes the first flow of water which may contain contaminants from the roof and gutters, seals it off, then automatically diverts the remaining flow to the tank. First Flush Diverters help divert the first flush, through their design. They are installed using a T junction or high flow inlet to which the diversion chamber is fitted. As the chamber fills with the initial dirty water from your roof, a ball rises until it seals the inlet, allowing the rest of your rainwater, which is much cleaner, to flow directly to your tank.
Last updated at 03/21/2026 11:57:25
Rain Harvesting First Flush Downpipe
30-day returns
Rain Harvesting 100mm First Flush Downpipe Diverter
Delivery $10
100mm First Flush Downpipe Water Diverter Kit
Delivery between 24 Marβββ3 Apr $22
100mm First Flush Water Diverter (Rainwater Harvesting)
Free delivery by Thu
Rain Harvesting 100mm First Flush Downpipe Diverter
Delivery $14.99
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Rain Harvesting First Flush Downpipe
30-day returns
Rain Harvesting 100mm First Flush Downpipe Diverter
Delivery $10
100mm First Flush Downpipe Water Diverter Kit
Delivery between 24 Marβββ3 Apr $22
100mm First Flush Water Diverter (Rainwater Harvesting)
Free delivery by Thu
Rain Harvesting 100mm First Flush Downpipe Diverter
Delivery $14.99
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!