Essentially it is a system designed to divert debris from your roof so it can settle in a container, and only clean water can flow into your rainwater harvesting tank, as the debris settles it collects at the base of the system and can be flushed away.
First flush systems are a critical part of your rainwater harvesting system, the RotoTank ™ First Flush system helps to divert the sediment filled water to a holding 50 litre wall mounted Tank, as the tank fills the sediment settles at the base of the tank, the tank has been designed to allow the sediment to settle down to a central point where a fitting can then connect to the supplied tap at which point you can then connect a hose pipe. As the water rises in the tank the sediment settles, ultimately the clean water diverts to your rainwater harvesting tank and you prevent these contaminants from going into your system.
When it rains those first initial millimetres of rain clean off all the debris from your roof, this can include twigs leaves and dust and bird droppings, but in many parts of South Africa this can also include Monkey and other animal droppings.
By separating these sediments and contaminants out of your tank, first flush diverters help to improve your rainwater quality and safety.
RotoTank™ first flush system also extends the life of your pumps and fittings and reduce tank maintenance.
If you want to protect your rainwater quality by keeping as many dissolved and undissolved particles out of your tank as possible, then you need to incorporate a RotoTank™ first flush diversion in your rain harvesting system design.
