Built-In Villa Central-Vacuum Retractable-Hose AirWatts & Transport-Velocity Sizer

Deterministic Pneumatic dilute-phase solids saltation transport velocity (22-28 m/s in 50.8mm ASTM F2158 PVC) + orifice AirWatts = 0.11735 * Q_CFM * S_inH2O curve engine (.pdf, .svg, .json) built for Hide-A-Hose, Beam, Drainvac, Vacuflo — zero-upload ephemeral Wasm RAM execution.

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