Kit d'extension First Flush Boost
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
Avantages
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.
Avantages
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.
Avantages
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.
Avantages
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.
Installation, maintenance et informations sur le produit

Calculatrice de premier tirage
Calculez facilement la quantité d'eau dont vous avez besoin pour détourner et découvrez quel inverseur First Flush vous convient.

Service de conception
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Rain Harvesting™ Handbook
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Service de conception
Improve your existing Rain Harvesting™ system or design a new one with the help of our experts and our free system design service.