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Piping / Hydraulics

Stainless Pipe Friction Loss Calculator

Darcy-Weisbach head loss for stainless steel pipe and sanitary tubing, including fittings, elevation, and miscellaneous losses.

Fluid

Reference only — enter viscosity at this temperature.

Tubing

Elbows

Valves

Tee flow

Miscellaneous

Negative value = net drop in elevation.
Notes: Inside diameters are approximated from standard ASME B36.19M schedule wall thicknesses and ASME BPE sanitary tubing dimensions. Fitting losses use representative K‑values (90° elbow 0.75, 45° elbow 0.35, ball valve 0.05, butterfly valve 0.40, flow‑through tee 0.20, branch tee 1.00) and pipe roughness of 0.0015 mm typical for drawn stainless. Friction factor uses the Swamee‑Jain approximation for turbulent/transitional flow and f = 64/Re for laminar flow. Verify against certified data sheets for critical designs — this tool is for estimating purposes.