Hydraulic screening
Friction factor depends on Reynolds number and roughness.
Fittings and elevation add losses this calculator excludes.
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Pipe Pressure Drop Calculator
Darcy-Weisbach ΔP screening — length, diameter, flow, friction factor.
Results
ΔP (psi)
65.84
Velocity (ft/s)
12.77
Head loss (ft)
151.95
Note
Screening estimate
ΔP ≈ 65.84 psi over 1000 ft (4" pipe @ 500 gpm). Screening only — verify with field data.
engineeringEngineering screening only. Engineering screening calculator only — not a substitute for licensed professional engineering, API/ASME/code-compliant design, certified reserves audits, regulatory well approvals, or field-measured PVT and flow data. Verify all inputs, units, and correlations against your facility standards and qualified sign-off before operations or design decisions.
What this means
Darcy-Weisbach screening
plumbing
Friction factor matters
Turbulent flow friction (f) depends on Reynolds number and pipe roughness. This tool uses your entered f — typical steel pipe might be 0.02–0.03.
engineering
Field verification
Screening only. Compressible gas, fittings, elevation change, and two-phase flow need full hydraulic models and PE review.
Need expert help?
Facility hydraulic models
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