Most of these models are derived from the standard Dinflow range and include a recessed impeller which creates a vortex within the pump casing. Smaller models are also included in the range, mainly for marine use.  Vortex pumps can be supplied as bareshaft pumps, long-coupled, base-mounted units, close-coupled motorpumps, or long column sump pumps.  This pump is ideal of moving solids laden liquids