I just installed a Fleck 7000sxt in my house and wanted to set the BF to get 3 gallons water each regen. The label on my valve says 0.25gpm so I set BF for 12 minutes. I ran a manual regen and ran the brine hose into a five gallon bucket. It ended up running six gallons in 12 minutes so I must have a 0.5 button. Just a heads up in case I can help anyone, I changed BF to 6 and I get 3 gallons.