3 replies to this topic

[jsaleh7]

Hi All,

When we have a datasheet for a pump that shows head for 3 different impeller sizes but shows only one power curve; does this mean this power curve is applicable to any impeller size? or this is the power curve for the rated impeller?

many thanks in advanced for your clarification.

regards

 

[fallah]

 

When we have a datasheet for a pump that shows head for 3 different impeller sizes but shows only one power curve; does this mean this power curve is applicable to any impeller size? or this is the power curve for the rated impeller?

many thanks in advanced for your clarification.

 

 

Hi,

 

That power curve could be applicable for the selected impeller..

 

[christopherchoa]

You can relate the power with impeller size. Check pump's affinity law in the internet.

[Chemitofreak]

Hi,

 

Power provided is for the rated curve (selected impeller diameter).

 

Some manufacturers, prefer to provide one impeller size less and one size more head v/s flow curve for ready reference.

 

TIP:

 

Since power is function of Flow and Head, it will change as both of these change. 

Edited by Chemitofreak, 12 January 2017 - 03:02 AM.