Dewatering Pump Sizing & NPSH

Calculate Total Dynamic Head (TDH), prevent cavitation (NPSHa), and size dewatering pumps using fluid dynamics.

Provide direct flow rate or estimate via Darcy's Law.

Target Flow Rate (Liters/sec)

Suction Lift (m)

Water level to pump center.

Discharge Elevation (m)

Pump center to discharge point.

Suction Pipe L (m)

Suction Dia (mm)

Discharge Pipe L (m)

Discharge Dia (mm)

90° Elbow2

45° Elbow0

Tee0

Check Valve1

Gate Valve1

Altitude (m)

Water Temp (°C)

Pump Efficiency (%)

Add 10% Reserve