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Ingrid tunnel - Velbert, Germany

The Project:


Extension of the L433 road Velbert/Langenberg


Executing company:

Wayss & Freytag Ing. Bau AG


The Problem:


The ground water must be pumped off. Continuous truck traffic has to be ensured due to the traditional excavation by means of building machines, i.e. pollution by mud must be prevented by continuously pumping off in pumping on snore mode.


Our Solution:


Lowering the ground water table by means of contractors' pumps of the KTZ and KTV series. Our pumps are provided with a patented oil lifter which ensures lubrication and cooling of the mechanical seal even at a minimum oil level.

Twenty-four-hour pumping on snore mode without failure has been implemented for months now due to this particular feature.

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.