What it does
SF Pressure Drop calculates losses in liquid and gas pipe systems, including fittings, elevation and changes in kinetic energy.
SF Pressure Drop combines pipe and fitting losses with elevation and kinetic-energy changes for liquid or gas systems. Supply pipe roughness, fluid density/viscosity and the chosen elements; editable fluid and resistance-coefficient databases retain custom data. The Windows 7.x information page describes pressure-loss versus flow curves, unit choices and project/result exchange through Excel tables and charts. The separate 10.x Excel edition requires installed Excel 2007 or later. Paid licences are permanent for the purchased major version, and a single user may install on multiple computers for that user's own use. Windows builds are offered as shareware for evaluation; the provider separately labels 7.3 under Linux/Wine freeware. Those edition/platform conditions do not establish that the online calculator has every desktop function.
Strengths
- Combines pipe and fitting losses
- Fluid and pipe databases can be supplemented with user data
Watch out for
- Excel edition requires an installed supported Excel version
Best for
- Documenting a pipe-system pressure-loss estimate
Sources
- SF Pressure Drop Home - SF Pressure Drop (Oct 26, 2026)
- SF Pressure Drop7.x Inputs, Curves and Excel Exchange (Oct 26, 2026)
- SF Pressure Drop Permanent Version Licence and User Scope (Oct 26, 2026)