Basement Sump & Grinder Pump Self-Scouring Velocity & Blackout Backup Sizer

Deterministic Minimum solids-transport scouring velocity (0.7–1.2 m/s EN 12056-4) + check-valve water-column fall-back volume + DC inverter runtime engine (.pdf, .json, .csv) built for Grundfos Unilift, Jung Pumpen, Zoeller, Pedrollo — zero-upload ephemeral Wasm RAM execution.

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