Deterministic Simultaneous multi-outlet orifice flow summation + Darcy-Weisbach PEX fitting zeta-losses (<2.0 m/s acoustic limit) + EN 1253 weir trap head balance engine (.pdf, .svg, .json) built for Hansgrohe Axor, Dornbracht, Viega Advantix, Geberit — zero-upload ephemeral Wasm RAM execution.
Running ephemeral Wasm verification…