Centrifugal Pump Basics

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What is Pump?

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• Pump is a machine to transport the liquid from one place to another place.

Vapour Pressure

• Defined as that absolute pressure at which the vapour contained in a substance is at equilibrium with its liquid or solid phase. Significant for centrifugal pump technology is only the actual transition between gaseous and liquid phases.

Pressure

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• Pressure is measure of force per unit area – Kgf/cm2, psi etc

Two types of Hydraulic pressure is

1. Static pressure : pressure of a non moving liquid.

2. Dynamic pressure: pressure caused by liquid velocity.

Head in m

• The head of the pump is an expression of how much height the pump can lift the liquid.This is measured in terms of meter of water column, independent on the Liquid density.

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