Chill Tank Agitator Pump Our agitator pump circulates the water in the chill tank tomaintain a constant water temperature which will assure uniform chilling of processed poultry. The agitator can be moved so one pump can be used in several chill tanks. The standard units fits over the PP430 or PP412 chilling tanks. However, the standard unit can be easily modified to fit other tanks. Advise us of your tank dimensions and the type of material (metal, fiberglass, etc.) and we will quote.