I have a drilled well which is about 80m deep with a submersible pump. Its about 10m from my basement, where I have a pressure vessel (at 4 bar) and connections to other parts of the property. All pipework is 26mm ID HDPE.
One of the locations is a run of about 35m from the basement, and I get over 60 liters a minute there.
I had an iron removal filter installed on Friday. It has a venturi for injection of atmospheric air into the oxidation vessel. The vendor said I should get a pressure drop of no more than 1/2 bar and I should barely notice the difference in flow rate
I now get 20 litres a minute to the same location. If I bypass the iron filter, it is back to 60. Clearly I notice the difference in flow rate :) I am unsure how to measure the actual pressure differential, but it seems like it must be a LOT more than a 1/2 bar drop to result in such a reduced flow.
I ran the tap for 1 minute before conducting the tests in each case, as I assumed that may be enough time for the pressure to stabilize.
What are my options here? Why would it be getting slowed down so much? The vendor is suggesting removing the venturi and installing an air compressor. Is it likely that would fix the problem? Do I need a larger filter system to deal with the high flow rate? Is this even considered a high flow rate?
Any advice appreciated!