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This video provides detailed theoretical information used to explain the determination of a pump system operating mode in case of containing parallel or in-series connected pump.
There are various schemes of connecting such systems, as the most commonly used ones (in practice) are analyzed in this video.
In order to make more understandable the determination of the operating mode of the co-operating pumps, as well as their individual operating modes for each of the considered cases, appropriate graphs were used.
This is the first video from a set of videos, as in the rest each of the previously reviewed cases will be studied in details, and the determination of the relevant operating modes will be demonstrated in a graph-anaclitic way.

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