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Schwarzbach pipe heading, Germany

The Project:


Gelsenkirchen pipe heading, Schwarzbach canal, Germany

Executing company: WÜWA Bau GmbH


The Problem:


The material excavated by the micro-tunnelling machine is pumped by a mud pump into a separating system where coarse parts are separated. The remaining highly abrasive sludge is passed into a receiver. The material deposits due to the intermittent operation of the pump.


Our Solution:


A KRS2-80 with agitator whirls up the abrasive sludge so that it can be pumped off without any problem. Minimum wear is possible due to the application of components of grey cast and chromium cast iron (25% chromium portion).

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 terms and conditions that we also send to you by mail on request.