Fan Pump

The fan pump propels the dilute slurry of papermaking furnish towards the headbox of a paper machine. The pumps are designed in such a way as to minimize pulsation, since the goal is to keep the basis weight contant over time and avoid "barring". Thick stock, often having a consistency of about 3 to 5% is diluted with white water at the inlet of the fan pump. The consistency of thin-stock furnish coming out of the fan pump is typically between 0.3% and 1% solids. Papermakers