Kieswerk Hess AG, Switzerland
		The project: Pumping off the collecting gravel wash water to the separation system Executing company: Kieswerk Hess AG, Laupen, Switzerland The problem: The submersible pumps that were previously used transported the gravel wash water to the separation system in a way that interfered with the efficiency of the plant.
Our solution: Use of type KRS822 submersible wastewater pumps that are tested for continuous operation and that can be controlled using an intake quantity regulator that is independent of rpms. The result is a more highly efficient plant. The amount of sediment in the basin decreases as a result of the constant movement of water. Pressure and air surges in the pipelines are avoided.
In the event of abrasive and corrosive utilization, stronger wear and tear will take place naturally in certain components. With regards to the above application wear and tear can take place mainly in impeller, agitator, suction plate, shaft sleeve, oil ring, mechanical seal, pump casing, strainer, motor casing and discharge coupling. Depending on the working conditions the lifetime of those parts might vary significantly and can be shorter than the legal warranty period. In this regard, please pay attention to our general conditions of sales (www.tsurumi-europe.com/english/GCS.htm) that we also send to you by mail on request.