Pipe Sizer A fast, engineer-friendly tool to size pipes and estimate head loss using the Hazen–Williams and Darcy–Weisbach methods. Ideal for MEP/HVAC, water networks, and general liquid transport.Version : 1.0.1 Download Application Screen Shoot Reference Darcy-Weisbach vs Hazen-Williams Formula, Plumbing Engineering & Design Handbook of Tables, ASPE