SOURCE-ALIGNED CALCULATION WORKSPACE
Centrifugal Pump Sizing Calculator
Build a structured centrifugal-pump duty package before reviewing a pump curve or replacement model.
C7 · VALIDATED
01Duty & fluid
02Compatibility & cavitation
ENGINEERING REFERENCE
Centrifugal and chemical pump sizing calculator
Prepare a structured duty package from flow, total dynamic head, fluid density, viscosity, temperature, vapor pressure, solids and available NPSH. The calculator keeps compatibility and cavitation inputs visible for an engineering selection request.
The result is a duty summary, not an automatic pump model recommendation. Final selection must confirm wetted materials, operating envelope, NPSHr margin, temperature limits and the manufacturer curve.
What Data Do You Need to Size a Centrifugal Pump?
The calculator collects flow, TDH, density, viscosity, temperature, vapor pressure, solids, a material note and NPSHa. Together, these create a useful duty package for engineering review.
Flow and TDH Define the Duty Point
The starting point for centrifugal pump selection is normally required flow and total dynamic head. Those values define the hydraulic duty to review against a pump performance curve.
What the Tool Does Not Select Automatically
This tool does not select a final pump model, impeller diameter, motor size, seal arrangement, material compatibility, compliance standard or required NPSH margin.
Frequently Asked Questions
Is this the same as automatic pump selection?
No. It organizes duty data; final selection requires pump-curve, power, NPSH, material and service-condition review.
Why do I need viscosity?
Viscosity can affect hydraulic behavior and may require further performance review.
Should I calculate NPSHa before selecting a pump?
Yes. Determine NPSHa from the system and compare it with candidate-pump NPSHr.