Centrifugal Pumps and Shut-Off Head

Centrifugal pumps and maximum (shut-off) head

The maximum "shut-off" head for a centrifugal pump can be estimated as
hs = (d n / 1840)2                                       (1)
where 
h = head (feet)
d = outside diameter impeller (inches)
n =  wheel velocity - revolution per minute - (rpm)

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