Hydraulic submersible pumps are designed for the high demands in the construction industry.
HYCON pumps are VORTEX pumps. VORTEX pumps are designed especially for dirty water with even very large solids. They have less wear on the impeller due to the Vortex design.
Hydraulic pumps may run dry all Day without breaking down.
The impeller at top sets the water in a circular movement and by centrifugal force a centre of air shaped like a cone will occur.