Would like to know the selection criteria? Mine is having discharge of 1 m3/s and Pump head in the range of 300 m. The length of the raising main in the range of 30-40km.
looking for your answers...
Mixed flow pumps are commonly used in agriculture, construction, water treatment, HVAC and fire protection. They are suitable for applications where large volumes of water must be moved at low pressures.
Time to employ an experienced pump / system design designer, it's way beyond trying to use a free website for answers.
Give a bit more information and at least you might get a few ideas as how to best approach this application.
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
That's a lot of eggs in one basket.
Maybe you would want to use multiple pumps.
I'm thinking of at least 2, maybe 4.
If the system goes down, is there any alternative?
--Einstein gave the same test to students every year. When asked why he would do something like that, "Because the answers had changed."