In the pipeline-construction the requirements of the operational enterprises rises from year to year. One example is the refurbishment of sewage-systems with big diameters. The conveying capacity of the pumps during wet weather conditions inside these sewage systems could easily turn into a great challenge.
Pumps with a cpacity of 20 l/s to 30 l/s are usual and are mostly basic equipment of the most sewer construction firms. With bigger diameters automatically the required capacity of conveying sewage rises. In cases where the shut-off bladder could not be used and the by-passing is impossible real problems start. Which pumps could be used? How do I get this high conveying capacity?