How does the handpump function? (Explain in detail)
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Hand pumps are pumps which are operated manually means which requires human power. This pump is operated under the theory of pressure. Hand pump provides clean and safe water which is clean to drink which doesn't required any cleaning. Hand pump is used in every country for the purpose of industrial, marine, for irrigation and for leisure activities. Their are different types of hand pumps which operates on a piston, diaphragm or on a rotary vane principle whose check valve operates in an opposite direction on the entry and exit port,
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