manual water pump

Principle of a water pump: The water pump uses a piston to expel the air from the compressed air chamber, thereby creating a pressure difference. This pressure imbalance occurs due to the varying magnitudes of pressure. At the same time, under gravity, the fluid flows from areas with higher pressure to areas with lower pressure, allowing water to flow from the faucet into the external container. This mechanism enables liquid to be pushed from a lower level to a higher level without consuming electrical energy.