Which type of pump is generally more compact?

The balanced vane pump is considered generally more compact due to its design, which allows for efficient operation with a shorter length and smaller overall footprint compared to other types of pumps. This type of pump utilizes vanes that are equally distributed, meaning the forces acting on the vanes are balanced, which contributes to a more compact construction.

In contrast, unbalanced vane pumps can experience uneven forces that may warrant a more robust construction to handle such stresses, often resulting in a larger size. Gear pumps, although effective, tend to be bulkier due to their gearing mechanisms and the need for more room to accommodate the gear shafts and housing. Centrifugal pumps have larger volute casings and impellers, making them inherently less compact for capacities that produce significant flow rates.

Overall, when considering compactness, the balanced vane pump stands out as a design that maximizes space efficiency while maintaining optimal performance.