Discover the innovative First Flush Carrot Extra Volume, a compact, low-maintenance rainwater diverter, designed to keep dirty roof water away from your tank while taking up minimal space. Unlike traditional first flush chambers, the First Flush Carrot installs directly onto your downpipes and uses a clever system of grommets to measure water flow and automatically divert clean water to your tank. The device features “The Tee” – an anti-skipping, sloping design that ensures effective capture of dirty water. Best of all, it automatically resets after each rainfall event, giving you cleaner water with less hassle and maintenance.
This kit fits 100mm downpipes. 90mm First Flush Carrot Extra Volume also available.
Features & Benefits
- Compact, chamber-free design – Takes up minimal space and installs easily anywhere
- Automatic first flush diversion – Diverts dirty water then seamlessly switches to send clean water to your tank
- Catch-All Tee technology – Prevents water from skipping through until first flush is complete, maximizing clean water collection
- Adjustable diversion volume – Easily customise diversion up to 40L/10 gal to suit your specific needs
- Perfect for medium catchments – Ideal for areas with low to moderate pollution levels
How the First Flush Carrot Works – Product Overview Video
Note: This video is about the standard First Flush Carrot which does 20L/5 gal. The device works the same as the Extra Volume version. The main difference is the Internal Carrot Device which can hold more water.
How to Install Your First Flush Carrot
Basic steps:
- Choose your installation location (horizontal or vertical downpipe)
- Install the First Flush Plus T-junction with directional arrow pointing toward your tank
- Attach the upper collar
- Screw in the carrot housing with desired grommet settings
- Connect storm water outlet pipe below the carrot
For detailed visual guidance, watch the complete step-by-step video tutorial and refer to the Installation Guide below.