Self-cleaning
March 1st 2007

The Hidrostal self-cleaning sump system combines a Hidrostal screw centrifugal impeller pump with a special basin arrangement to make the sump self cleaning.

With the special sump geometry installed, the pump behaves exactly like a normal submersible pump until the sump level approaches stop level. At this point, the sump geometry introduces a strong rotating flow which entrains all floating materials, including oils and greases and pumps them into discharge system.

The result is that on every pump cycle all the solids and floating material (fat and so on) is pumped out of the sump to the screen and, because there is no build up of solids or fats in the sump, the pump does not block and is kept clean.