I did not put enough glue on the connection when I put my first system together. The other thing that got me was the screw cap fitting that goes on the bottom of the vertical PVC pipe fits rather loose. But you don’t want too small of a hole or the automatic reset will clog up, which has happened to me several times now. You don’t want too large a hole or you end up wasting a lot of water in a slow rain. The trial and error was with the slow release system to get the right size gaskets in the system. I have had to do a good bit of trial and error. My experiences with the first flush system have been overall pretty good. There are calculations and suggestions with the directions in the kit to help you figure out what size PVC to use. You use a PVC pipe in the vertical section that is long or short based on the size of your roof. Since the slow release control valve is so important for this system to operate automatically, I will be using the extra filter on all of my systems. With both filters you end up with two filters in the First flush system if you use this one. However, there is an additional option that can be purchased separately called the Stainless Steal Filter. There is a small filter included with the First Flush system to keep the slow release control valve from clogging. The bottom of the vertical PVC pipe has a screw cap so you can periodically empty the pollutants out of the pipe. Once the vertical PVC pipe is empty, it will catch the pollutants from the next rainfall. It might take an hour or more to fully drain the vertical PVC pipe. It slowly releases water out a hole that is very small. The slow release control valve at the bottom of the vertical PVC pipe is what makes the system automatic. Once the PVC pipe is full, any additional water is diverted out the horizontal side of the T connection at the top of the PVC pipe and goes to you IBC tote.įirst Flush Downspout Water Diverter Product Review There is a ball that floats on top of the water in the vertical PVC pipe and seals the pipe off after the vertical PVC pipe fills so the pollutants and “floaties” can’t get into your IBC tote. So it initially fills a vertical PVC pipe and traps all of the pollutants in the PVC pipe. The idea is that the first couple of gallons of rainwater has the pollutants. The majority of pollution, pollen, and other crap will come into the system with the first couple of gallons of rain. A sealing ball is free in the PVC pipe between the “T” at the top and the screw cap at the bottom allowing the ball to float in the water as the vertical PVC pipe fills up. The slow release control valve at the bottom of the vertical PVC pipe. The vertical PVC pipe has the “T” connection at the top with the ball seat and the screw cap. It also has a slow release control valve and a bunch of other stuff like brackets. The kit consists of a “T” connection, a ball seat, a sealing ball, and a screw cap. I went with a 3” system and that is what is depicted in all of the pictures and the videos. You can purchase a first flush system for a 3” or a 4” PVC pipe system. The kit comes with everything you need except the pipe to put it all together. First Flush Downspout Water Diverter Product Review – Parts
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