What is one function of the cushion formed by the piston in a duplex pump?

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The function of the cushion formed by the piston in a duplex pump is primarily to stop the piston from hitting the head. When the piston moves, it creates a cushion of fluid that can absorb the impact as the piston approaches its endpoints. This cushioning effect is essential for preventing mechanical damage to the pump components, such as the piston and the pump head, which could otherwise result from abrupt stops during operation.

By facilitating a smoother stop, the cushion also contributes to the overall longevity and reliability of the pump system, reducing wear and tear that might occur from direct impacts. This function is particularly important in high-pressure or high-speed applications where the forces involved can be significant. Other functions associated with fluid dynamics, such as preventing cavitation or reducing energy consumption, are not directly related to the cushioning effect of the piston.

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