The PREROSTAL® and PreroClean™ Prerotation system is a unique, economical, uncomplicated method of automatically adjusting pumping volume to varying inflow rates using a constant speed motor and pump. It combines the screw centrifugal impeller characteristics of a Hidrostal pump with a specially configured vortex-inducing chamber around the suction pipe of the pump. The chamber utilizes gravity to impart a fluid spin in the same direction of rotation as the pump impeller, and this spin produces a flow reduction without the necessity of changing pump speed.  This method of matching pump outflow to pump station inflow eliminates the need for any electrical equipment such as inverter drives. 

In addition, the PREROSTAL system is a highly effective sump cleaning system that does not require any additional mechanical or electrical apparatus such as additional controls of mixers or aerators.  It is the ideal solution for handling variable flow applications with large or troublesome solids. 

The PreroClean™ Self Cleaning Sump is a simplified version of the PREROSTAL and is designed for applications where the primary aim is maintaining clean sumps without the need for flow matching. This option works on the same principles as the PREROSTAL but the weir height and tangential channel dimensions are fixed for each pump size allowing these features and the basin to be molded into a single piece, simplifying the civil construction 

 The PREROSTAL system is proven and cost-effective to the Archimedean screw pump system.  We have successfully replaced numerous installations around the world! 

To request more information on the PREROSTAL® and PreroClean™ Prerotation system by Hidrostal, contact the team at SPRINGER PUMPS® today. 

Think Pumps. Think Springer.