Water-based fluids that are glycol-based should have the pump mounted below the fluid level for what reason?

Mounting a pump below the fluid level for glycol-based, water-soluble fluids is primarily due to the density of the fluid. Glycol-based fluids generally have a higher density than water, which means they exert more hydrostatic pressure. This additional weight necessitates a pump placement that ensures adequate fluid supply and effective operation. By positioning the pump below the fluid level, it can easily draw from the supply, benefiting from the natural pressure created by the height of the liquid column above it.

This arrangement helps ensure that the pump maintains prime and minimizes the chances of cavitation, which can occur if the fluid level drops below the pump inlet. Furthermore, installation below the fluid level allows for efficient operation, as the pump can effectively utilize the weight of the fluid to aid in the movement and distribution through the system. Thus, ensuring proper pump placement in relation to fluid density is crucial for operational efficiency and longevity of the equipment.