BS EN 12845 / LPCB TB203 — centrifugal fire pump compliance. Live calculations, no submit needed.
Test Point Readings
Enter each flow & pressure pair: shutoff (zero flow), duty, overload, and intermediates. TB203 check-points identified automatically.
Discharge pressure is read directly off the pump's discharge gauge. Suction pressure is read off the suction gauge at the same instant — enter 0 if drawing from open/atmospheric suction (most static tank-fed installations). The tool uses discharge − suction as the pump's actual developed pressure.
When testing via a bypass, friction losses can prevent rated flow even when the pump is fine. Enter bypass return pipe details to calculate.
Fittings in bypass return
Enter design specifications and at least one test reading
All calculations update live