Page 58 - Pressure 10 class

Difference Between

Down stroke Upstroke

1. When the piston of water pump is 1. When the piston of water pump
moved downwards, this is called down moved upward, this is called upstroke.

stroke.

2. In this condition valve of piston 2. In this condition valve of piston
opens. closes

Piston Valve Foot Valve

1. It is present in piston. 1. It is present at the bottom of the barrel.

2. It opens when the piston moves 2. It opens when the piston moves up and
down and closes when piston moves closes when the piston moves down

up( down stroke). ( upstroke)

July 30, 2020 Taranath Baral/GC Shiba/Suraj Thapaliya 58