centrifugal pump pressure and head
If the discharge of a centrifugal pump is pointed straight up into the air the fluid will pumped to a certain height - or head - called the shut off head. This maximum head is mainly determined by the outside diameter of the pump's impeller and the speed of the rotating shaft. The head will change as the capacity of the pump is altered.
The kinetic energy of a liquid coming out of an impeller is obstructed by creating a resistance in the flow. The first resistance is created by the pump casing which catches the liquid and slows it down. When the liquid slows down the kinetic energy is converted to pressure energy.
- it is the resistance to the pump's flow that is read on a pressure gauge attached to the discharge line
A pump does not create pressure, it only creates flow. Pressure is a measurement of the resistance to flow.
More products of pumps
2012-05-15
