Transcription of Pump Basics - About INSCO
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Pump Basics - About INSCO
Pump BasicsPump BasicsPump BasicsAffinity LawsTo Navigate:Next - N, Page Down, Enter, Space Bar, Left Mouse ClickPrevious - P, Page Up or BackspaceEnd Show - Esc0510152025300102030405060 GPMFe e t o f He adAffinity laws for Centrifugal PumpsThe affinity laws - Formulas The affinity laws describe how changes in RPM (N) affect GPM, HEAD, and HP in centrifugal are three laws : Law 1 means that as RPM is reduced, flow (GPM) is reduced in a linear relationship. For example, if RPM drops to 70% of the original, GPM drops to 70% of the laws - The Effect0246810120246810 RPM I n d e xRe lative GPM Law 2 means that as RPM is reduced, pressure (feet of head) is reduced by the square. For example, if RPM dropped to 70% of the original, feet of head would drop by (70% x 70%) = ( x ) = = 49% of the original affinity laws - The Affect0204060801001200246810 GPM Feet of Head Law 3 means that as RPM is reduced, power consumption (brake horsepower) is reduced by the cube.
The Affinity Laws - Formulas • The Affinity Laws describe how changes in RPM (N) affect GPM, HEAD, and HP in centrifugal pumps. There are three laws:
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