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:
“By straightening out and lifting a forefinger,
He pointed with his hand from where it lay
Like a white crumpled spider on his knee:”
—Robert Frost (1874–1963)
“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)