An axial flow pump is a type of centrifugal pump that uses an impeller with vanes to direct the flow axially.
Axial: adj – relating to, forming, or characteristic of an axis, situated in, on, or along an axis
In this way, they differ from most other centrifugal pumps, which direct water flow radially.
Radial: adj – emanating from a common central point; arranged like the radii of a circle; of, like, or relating to a radius or ray; spreading out or developing uniformly on all sides.
In general, axial flow pumps create less pressure (head) than radial flow centrifugal pumps, but they can produce much higher flow rates.
Axial flow movement through a pump
This type of pump usually consists of an impeller with a smaller number of vanes, typically only three or four which are arranged in such a way that the pumped fluid exits axially (i.e. in the same direction as the shaft), rather than radially (90 degrees from the shaft). The impeller is normally driven by an electric motor and the orientation of the vanes produces very low head as the liquid is pumped.
They are useful as circulating water pumps
For a copy of the ecex leaflet please click Pumps, valves & pipework
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