First Flush Boost Expansion Kit
The Expansion Kit has been designed for the First Flush Boost to increase your diversion volume by 20L (5gal) at a time. You can install up to two of them, to bring your total diversion volume to 40L (10gal) or 60L (15gal) total.
Improve your water quality
Include the Expansion Kit in your install
Benefits
Include the Expansion Kit in your install
The Expansion Kit needs to be installed at the time of initial install, so order this with your First Flush Boost. The parts simply glue together with PVC cement.
Benefits
Improve your water quality
Improve the quality of water you capture in your tank by increasing the volume of water you divert.
Diverting more water from the First Flush will generally yield better quality water in your tank. But only to a certain point, because otherwise you will waste too much water! We generally recommend to divert a maximum of the first 2mm of rainfall on your roof. You can do the calculation here to see whether it's beneficial for you to use the Expansion Kit.
Benefits
Include the Expansion Kit in your install
The Expansion Kit needs to be installed at the time of initial install, so order this with your First Flush Boost. The parts simply glue together with PVC cement.
Benefits
Improve your water quality
Improve the quality of water you capture in your tank by increasing the volume of water you divert.
Diverting more water from the First Flush will generally yield better quality water in your tank. But only to a certain point, because otherwise you will waste too much water! We generally recommend to divert a maximum of the first 2mm of rainfall on your roof. You can do the calculation here to see whether it's beneficial for you to use the Expansion Kit.
Product Installation, Maintenance and Information
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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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Ontwerpdiens
Verbeter jou bestaande Rain Harvesting-stelsel of ontwerp 'n nuwe een met die hulp van ons kundiges en ons gratis stelselontwerpdiens.
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Reën Oes Handboek
'n Gids wat jou van hulp en inspirasie sal voorsien om jou reënwater-ophaalreis vandag te begin.

Ontwerpdiens
Verbeter jou bestaande Rain Harvesting-stelsel of ontwerp 'n nuwe een met die hulp van ons kundiges en ons gratis stelselontwerpdiens.