Solid Impeller Pumps


Solid Impeller Pumps for Fluid
Almost all Solid Impeller Pumps are “Centrifugal Pumps”. Accordingly, almost all Solid Impeller Pumps are intended for transferring fluids only. A centrifugal pump uses an internal turbine (Impeller) to pull fluid in at the center and spins it outward at a higher speed / pressure using centrifugal force. Traditionally, a centrifugal pump would have a dedicated inlet port and outlet port, and the inlet would be positioned directly at the center of the head (and at the center of the impeller). Modern centrifugal pumps have heads that employ a combination of small channels and chambers that allow the ports to be at any position while still having the inflow go to the center of the impeller, while the outflow comes from the exterior of the impeller. This also enables either port to be used as the inlet or outlet.
The benefits of solid impeller pumps are that they are relatively inexpensive and extremely durable. The drawbacks are that they are not gentle on the product that is being pumped, are highly susceptible to damage if run dry (without priming the head before use), and are intended only for transferring fluids—the exception being solid impeller pumps on Destemmers (such as the Zambelli “Gamma” series).