How does viscosity affect centrifugal pump performances?

What causes pump cavitation?

What is a pump curve?

Is the Albin ALH pump bi-directional?

What is the function of a pump internal relief valve on positive displacement pumps?

What is slip and how does it affect pump performance?

How is the volume of pump sumps or pits determined? Is there an optimum size?

Do centrifugal pumps require more Net Positive Suction Head (NPSH) margin at higher elevations than at sea level?