KSB Pump Training Manual

Introduction of this Manual

A centrifugal pump consists of 4 main elements:

1). Impeller which rotates The impeller has vanes which transfer kinetic energy into the liquid pumped

2 ). Pump casing to convert kinetic energy into potential energy and also contain the liquid

3). Shaft to support the impeller

4). Generally a seal around the shaft to contain the liquid

A centrifugal pump:

1). Does not generate a vacuum, i.e. it cannot suck. The impeller therefore has to be flooded in some way.

2). The flow and head developed are independent of the liquid pumped, apart from effects of viscosity

3). Centrifugal Pumps deliver volumetric flow and head. All curves are therefore expressed in m3/h and m (or equivalent units)

4). Viscous liquids reduce the flow and head of the pump. More later on this issue

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