Pumps Definitions

Question 1

Static Suction Lift

Answer 1

The distance, measured vertically, that the intake of the pump is placed above the surface of the water

Question 2

Static discharge head

Answer 2

The vertical distance, in metres or in feet, from the center line of the pump to the free surface of the water in the discharge tank

Question 3

Total Static Head

Answer 3

The vertical distance from the surface of the source of supply to the surface of the water in the discharge tank AND is the difference in height of the water being pumped to the level where water is being discharged at

Question 4

Head

Answer 4

described as pressure, the differential pressure between the pump intake and the pump discharge

Question 5

Static suction head

Answer 5

The distance from the free surface of the supply tank to the center line of the pump

Question 6

Friction head

Answer 6

When the pump puts the water in motion, this water will meet resistance in the pipes, valves and fittings. To overcome this resistance a certain amount of pressure is required. This pressure is called the friction head

Question 7

Velocity Head

Answer 7

A force is required to put the water into motion

Question 8

Pressure head

Answer 8

Force (extra pressure) required to discharge fluid into a vessel that is under pressure (ie.) a boiler

Question 9

Dynamic Head

Answer 9

the sum of a pump friction head, velocity head and pressure head.

Question 10

Pressure or equivalent head

Answer 10

when the pump discharges the water into a vessel under pressure, it has to add additional pressure