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Hand pumps are manually operated pumps that use human power and mechanical advantage to move fluids or air from one place to another. They are widely used for various industrial, marine, irrigation, and leisure activities. Hand pumps come in different types, including piston pumps, plunger pumps, and diaphragm pumps, and are primarily positive displacement. They are essential in developing countries for both community supply and self-supply of water, often installed on boreholes or hand-dug wells. Hand pumps are considered sustainable and low-cost options for safe water supply in resource-poor settings
