I posted this on a Stenner thread. I will try a new “generic” thread. basically my question is: should I choose a flow rate for a back pressure higher than what the pool filter shows? Would it reduce the run time of the dosing pump because the flow rate is higher? I am buying a replacement solenoid dosing pump for liquid chlorine injection. From years of experience, I know that I regularly use between 1 liter and 1.25 liters PER DAY to keep my free chlorine level at 2-3ppm which is fine for my pool. My question has to do with the SIZING of the dosing pump. My circulation pump runs 8 hours per day in 4 intervals. My old dosing pump runs on a timer which is activated when the circulation pump turns on . I control the amount of chlorine added by how long I have the dosing pump running, usually 1 to 2 minutes for each circulation pump interval. My question is which of the following models would be best to choose as a replacement. The 0110 model is closest to what I am replacing but since the circulation pump and filter operates at a low bar (under 2 or 30 psi), I am wondering whether the 0607 might be better suited. The dosing pump models shown can be adjusted to lower the “strokes” which would reduce the amount injected per “run”. (PS I live in Italy and hence the liters/hour etc.). I know that most of the models shown (on the left side of the graph) would work, but which would be best? Many thanks for your advice
