Hidrostal are the inventors of the screw centrifugal impeller. For more than 40 years a continuous research and development program has given Hidrostal a technology advantage in handling difficult materials. A family of pumps has been developed with variations of the screw centrifugal impeller to solve specific pumping problems
The Hidrostal screw centrifugal impeller is of single spiral vane design providing high efficiency, low NPSH requirement, large solid passage and the ability to handle rags or other fibrous material without blocking. The leading edge of the impeller vane blends into the impeller body so that any material on the leading edge is released and follows the flow stream through the pump.
The Hidrostal pump has the following main benefits:
Ability to pump liquids with viscosities above values normally possible with conventional centrifugal pumps.