Tobee AFR Rubber Lined Vertical Froth Pumps are designed to increase the pumpability of corrosive frothy suspensions. The principle of operation is similar to that of hydro- cyclone separation. Air is separated from the corrosive slurry in a vortex created by the impeller rotation and the tangential inlet to the pumps conical sump. This results in more efficient pumping at higher capacities and a smooth operation, free from pulsations caused by air locking. Design Features: Integrated unit for layout flexibility. Smooth operation of the open vortex created in the sump and vertical wet end inlet prevents air locking. Cantilever design does not require submerged bearings or shaft seals. Bearing assembly with double protection sealing arrangement to prevent ingress of slurry. Wear parts are available in a variety of different materials. Simplified maintenance.