Hand Pump
Hand pumps are manually operated pumps; they use human power and mechanical advantage to move fluids or air from one place to another. They are widely used in every country in the world for a variety of industrial, marine, irrigation and leisure activities. There are many different types of hand pump available, mainly operating on a piston, diaphragm or rotary vane principle with a check valve on the entry and exit ports to the chamber operating in opposing directions. Most hand pumps have plungers or reciprocating pistons, and are positive displacement.
Read more about Hand Pump: Hand Pumps and Access To Clean Water, Gallery
Famous quotes containing the words hand and/or pump:
“There is one thing that the American people always rise to and extend their hand to and that is the truth of justice, and of liberty, and of peace. We have accepted that truth and we are going to led by it ... and through us the world, out into pastures of quietness and peace such as the world never dreamed of before.”
—Woodrow Wilson (1856–1924)
“My nurses, those starchy ghosts,
hover over me for my lame hours
and my lame days. The mechanics
of the body pump for their tricks.”
—Anne Sexton (1928–1974)