CALCULATE → REFERENCE → SELECT → RECALCULATE → VERIFY → SAVE
Pipe System Sizing & Pressure Loss
Enter flow and fluid properties once. Select a documented material/schedule family, use its actual nominal bore and retain the same fluid assumptions through every hydraulic check.
What you need: required flow, target mean velocity, pipe length, fluid density, kinematic viscosity, absolute pipe roughness, total minor-loss coefficient k, optional pump-duty check.
What you get: a calculated requirement, compatible sourced options, the consequences of your actual component selection and a preliminary Job Card.
Confirm material pressure/temperature rating, fluid compatibility, transient pressures and adopted project criteria separately.
ENTER ONCE
Project inputs
Defaults are editable planning examples. Confirm your actual values; changing units preserves the physical quantity.
Review for the actual selected pipe material and condition; family selection does not overwrite it.
Sum compatible fitting/entrance/exit K values; no fitting count is inferred.
Calculated locally. Shared values feed downstream steps automatically. Inputs enter browser storage only when you choose Save Job.
Calculate requirement
CompletedRequired continuous bore calculated; nominal designation is not used as inside diameter.
- Theoretical inside diameter
- 41.203 mm
- Required flow
- 2 L/s
Calculation method
Existing Pipe Diameter engine: Q=Av, D=√(4Q/πv).
Look up a real family
Not startedChoose the actual known family; a calculated size does not identify its material/profile.
Select component
Not startedComplete the required upstream step; no previous result is retained.
Recalculate & verify
Not startedComplete the required upstream step; no previous result is retained.
Optional pump head / power
Not applicableAdditional information required for pump duty; optional evaluation is not selected.
ENGINEERING SUMMARY
Complete the valid calculation steps
No verified component selected yet.
Confirm material pressure/temperature rating, fluid compatibility, transient pressures and adopted project criteria separately.
Pump duty needs static head, terminal pressure and efficiencies. NPSH, pump curves and cavitation are not evaluated.
Existing tools and reference context
These Jobs reuse validated ValiCalc models. Use the standalone tools for a separate calculation; the Job carries shared values automatically within this page.
- pipe diameter
- pipe pressure drop
- pump tdh
- pump power
- pipe size chart
- plastic pipe size chart
- copper tube size chart
- cpvc pipe size chart
- water properties table
- pipe roughness chart
- pipe fitting loss chart
- reynolds number reference
Assumptions and verification limits
Steady incompressible full-pipe flow; nominal published bore, no allowance for fouling or manufacturing tolerance.
Darcy–Weisbach with the existing laminar/Colebrook transition handling and supplied fluid/roughness/K inputs.
Confirm material pressure/temperature rating, fluid compatibility, transient pressures and adopted project criteria separately.
Pump duty needs static head, terminal pressure and efficiencies. NPSH, pump curves and cavitation are not evaluated.
Saved Jobs live only in your browser. Reopening recalculates from inputs; clearing browser data deletes them. No private engineering input is added to the public URL. Copy/share explicitly includes the displayed Job Card.