Thumb Rules

Velocity at Pump Inlet and Outlet

1- Velocity should not exceed 1.8 m/sec [5.9 ft/sec] at Suction Pipe

2- Velocity should not exceed 2.5 m/sec [8.2 ft/sec] at Discharge Pipe

3-Velocity below 0.5 m/sec [1.64 ft/sec] give rise to sediments

4-Velocity above 5.0 m/sec [16.4 ft/sec] give rise to abrasion