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4" Round Downpipe First Flush Water Diverter Kit

Product Overview

Rain Harvesting Downpipe First Flush Water Diverter, part# WDDP111 improves water quality and reduces tank/cistern maintenance by preventing the first flush of water, which may contain roof contaminants, from entering the tank/cistern. First Flush Diverters help ensure cleaner water is available for use, which protects rainwater pumps and internal household appliances such as clothes washing machines, toilets, hot water systems, etc.


Downspout First Flush Diverters, such as the 3" and 4" kits, are installed at each downspout that supplies water to the tank/cistern. These First Flush Water Diverter Kits utilize a dependable ball and seat system - a simple automatic system that does not rely on mechanical parts or manual intervention. As the water level rises in the diverter chamber, the ball floats, and once the chamber is full, the ball rests on a seat inside the diverter chamber preventing any further water entering the diverter. The subsequent flow of water is then automatically directed along the pipe system to the tank/cistern.

Part NumberRH-WDDP111
Dimensions10"L x 10"W x 10"H
Weight4 lbs.
ManufacturerRain Harvesting
Shipping Info
Shipping FromCA
Freight Class150
Shipping Dimensions10"L x 10"W x 10"H
Shipping Weight4 lbs.

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