Double Vortex Delta Impeller Pumps--Overview

The DELTA impeller vanes extend continuously across the suction entrance. Centrifugal force propels the fluid with solids outward from the impeller eye.  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 smoothly 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 “hair pinning” or hang-up of stringy materials.  Larger solids are effectively broken up by the comminuting action of the impeller vanes.  Tests have shown that Cornell DELTA pumps will pass rags that plug comparable sized of Recessed Impellers and other types of “Non-Clog” pumps.  Cornell DELTA Pumps can often provide significant energy savings and lower operating costs because of their higher efficiencies as compared to typical recessed impeller pumps. Cornell DELTA Pumps do not require wear rings or axial clearance adjustments.

For Reliable Pumping of Difficult to Pump Liquids with Solids Content:

• Raw sewage with rags, nylon hosiery, etc.

• Manure with wet straw and hay stems

• Digested sewage sludge with hair and other stringy materials

• Light slurries and sludges with or without abrasive particles

• Food processing wastes, fish offal, etc.

 

Downloads:
 

Municipal Brochure

Delta Series Pumps Datasheet

Cycloseal® Datasheet

Run-Dry™ Protection Datasheet