4 in. First Flush Plus Water Diverter

Protect your rainwater quality by diverting the most contaminated water that washes off your roof with the first few inches of rainfall using the Rain Harvesting First Flush Plus.INSTALL WITH EASESupplied in kit form, the first flush diverter can be installed on your downpipes with a simple T junction. Simply add and install the length of pipe required to meet your diversion needs. This will be based on the volume of dirty, contaminated water you wish to divert.IMPROVE YOUR WATER QUALITYHelp prevent hazardous organic and inorganic particles from contaminating your rainwater by diverting and discarding the most particle-laden water from your roof. This first flush diverter captures the first flush of rainfall so you get better quality water in your tanks.The length of pipe required to form your first flush diversion chamber will depend upon how much water you need to isolate and capture. The following measurements are given as a guide only.3 feet of 4 pipe = 2 gallons3 feet of 3 pipe = 1.5 gallonsFirst Flush Diverters help divert the first flush, through their design. They are installed using a T junction or high flow inlet to which the diversion chamber is fitted. As the chamber fills with the initial dirty water from your roof, a ball rises until it seals the inlet, allowing the rest of your rainwater, which is much cleaner, to flow directly to your tank.4'' pipe is not included.