Pump Calcs
Simplified Pump Calculations for Sophisticated Results
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Centrifugal Pumps
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Specific speed (US)
Specific speed (US)
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Equation
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Assumptions
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Input 3 of 4 variables to solve for the unknown.
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Symbol
Variable
Input
Units
N
s
Specific Speed
specific speed
N
RPM
rpm
Q
Flow Rate
gallons/minute
H
Head
feet
centimeters
meters
millimeters
inches
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See also
Calculations
Suction specific speed (US)
Torque with horsepower and speed known
Double acting recip pump displaced volume, hp and piston speed
Tables
Specific Gravities of Liquids
Definitions
Full Load Speed
Velocity of Propagation (VP)
Synchronous Speed
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