The system dilutes mixes and thoroughly activates emulsion, dispersion and solution polymers. The units are available in a range of models to produce from 20 to 1200 gph of activated solution at concentrations from 0.1 to 2.0 percent. The patented, motorized Gatlin distribution head allows the unit to achieve a high degree of activation at all flow rates. The Gatlin distribution head hydraulically segments polymer into ultra-thin film platelets to maximize the polymer surface area exposed to dilution water, providing maximum activation. The Gatlin distribution head also ensures the degree of polymer activation is not affected by fluctuating water pressures or dilution water-ratio changes. Automatic units adjust polymer pump-flow rate by pacing the speed of the polymer pump to an external 4-20mA signal. Loss of dilution water causes the unit to automatically shut down and alarm.