Two distinct vortices are created within the pump to weave and pass any solids through the pump. Trailing edges of the impeller are designed to eliminate low pressure areas. Solids are washed over the rounded vane edges, down the slope of the impeller, and into the pump discharge.
Absence of sharp corners and edges on the impeller prevent hang-up of stringy materials. Larger solids are effectively broken up by the comminuting action of the impeller vanes.
Cornell Pump Co., 2323 SE Harvester Dr., Portland, OR 97222. Tel: 503-653-0330; Fax: 503-653-0338.