Page 54 - Pressure 10 class

2.Hand Pump ( Water Pump)

A water pump is a simple device which is used to draw underground water.

Handle

Construction;

❖ A water pump has a cylindrical barrel

with a

spout near the top.

❖ An air tight piston moves up and down

the barrel with the help of a handle. A
V1
valve ‘V1’ on the piston is called “Piston

Valve”. It moves up and down with the

help of a handle as shown in the figure. V2

❖ The valve ‘V2’ is at the bottom of the

barrel, called “Foot Valve”. It is made up

of rubber

or leather flap.

July 30, 2020 Taranath Baral/GC Shiba/Suraj Thapaliya 54