... Positive external no-clog control valve. MINDER Brand C100 Chlorine FeederC100 automatic chlorine feeder is designed for installation in the return line ... control valve to regulate the rate of water through the chlorine feeder.This capacity,under normal conditions,should provide a ... By regulating the valve setting between FULL(more chlorine) and 1/8(less chlorine) and the amount or Tri-Chlor tablets ...