NPSH: The most important property of pumps


What is NPSH? An overview of the pump’s cavitation prior to the detailed discussion about NPSH would be helpful. For example, when we pump liquid, the local pressure inside the pump (suction pressure) can drop below the vapour pressure of the liquid Pv. If P (suction pressure) is less than Pv, the liquid boils up […]

Why Positive Displacement Pumps are important?

Positive displacement pumps have a closed volume. They transfer energy to the fluid by the motion of the boundary associated with that closed volume. The expansion of the boundary sucks in the volume while contraction squeezes it out. We generally use pumps to transfer fluids from one place to the other. It is a general […]