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TOPIC: destaging pump
#45
uum (Visitor)
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destaging pump 2 Months, 1 Week ago  
I want know about the effect from destaging pump? can you explain with equation from afinity or whatever
I found, that the pump was repaired on my workshop have 4 impeller but in technical drawing, this pump consist of 7 impeller. Thanks
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#48
FDrexler (Visitor)
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Re:destaging pump 2 Months ago  
Assuming all impeller diameters are the same, each stage provides the same amount of head, with the possible exception of the 1st stage, which can be slightly less. If a 4 stage pump produces 100FT, then each stage provides 25FT. This does require that a spool piece (pipe) is installed to redirect the liquid around the diffuser and where the impeller use to be. Efficiency is essentially unchanged.
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Please note, although no boardcode and smiley buttons are shown, they are still useable
 
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