Shut off Pressure / Design Pressure Ratio

[shahyar]

Hi,
Has anybody seen "shut off pressure over design pressure" ratio more than 2, ever?

Thanks for your replies

 

[vanstoja]

Steepness of centrifugal pump head-flow curves generally depends on pump specific speed with axial flow pumps of high specific speeds having the steepest curves and the highest shutoff to design flow head ratios which might approach or even exceed 2.0. See Stepanoff's plots for various head-flow versus specific speed characteristics.

 

[d23]

shahyar

I bet you will like the HP curve on something like this!