Deurvloei: Water Pipe Planner

See how changes to a building's water supply could affect its taps before buying parts.

Deurvloei helps people responsible for homes, schools, clinics, shops and small apartment blocks explore an entered water-supply model. Start with a roof tank, a ground tank with a pump, or a direct mains supply. Add floors, taps, pipe connections and actual internal pipe diameters.

Record bucket volumes and fill times, source conditions and known pump curves. Review whether measurements are consistent. The current app does not infer hidden pipe routes or calibrate arbitrary building graphs from measurements; calculations use the pipe and outlet assumptions you enter.

Model taps running alone or together and inspect changing tank conditions over a selected scenario. See every tap's estimated flow, target, weakest time and dry intervals. Diagrams have text alternatives, and values can use metric or imperial units.

Compare a larger pipe, a pump with an entered curve, a higher tank, a separate line or a supported valve change. Check whether an option harms another tap and compare the prices you enter. Ranges describe tested assumptions. A lowest-cost result applies only to the checked options and conditions; missing prices and incomplete checks are shown explicitly.

Save buildings for another run, export CSV reports or readable project archives, and import an archive as a separate project. Optional app locking uses an app-specific PIN or supported biometrics. Exported files can be read outside the app, so choose carefully before including names or notes.

Results are estimates, not a guarantee. Hidden pipe routes, changing mains pressure, unsuitable outlet models and uncertain measurements can change the real outcome. Real-building accuracy and a qualified plumbing review have not been established.

Deurvloei does not replace a plumber's judgment or local building rules. It does not assess drinking-water safety, fire protection, water hammer, electrical installation or the structural safety of raising a tank. Have installation decisions checked by the responsible plumber.