Are gear pumps categorized into two basic designs: in-line and external gear?

The categorization of gear pumps is indeed structured around two primary designs: in-line and external gear pumps. In-line gear pumps are designed so that the gear shafts are aligned and drive the fluid in a straight line, which is ideal for certain applications where space and efficiency are key. External gear pumps consist of two gears that mesh with one another and are typically used for handling thicker fluids or higher viscosity materials.

The assertion that gear pumps can be divided into these two fundamental designs highlights the overarching classification used in the industry. The idea that pumps could only be categorized in other ways does not align with the basic understanding of gear pump design, as the in-line and external configurations are widely recognized as foundational. This clear division aids in selecting the appropriate type of pump based on the specific requirements of a task, such as fluid viscosity and flow rate.