What characterizes piston pumps in terms of cost and application?

Piston pumps are known for their ability to generate high pressure, which makes them particularly well-suited for applications where high pressure is essential for effective fluid movement or control. These pumps utilize a piston mechanism to create pressure and are often used in settings that require precise flow control and handling of viscous materials.

While they tend to be more expensive than other types of pumps due to their robust design and engineering, this cost is justified by their performance capabilities. Their ability to operate efficiently under high pressure makes them invaluable in various industrial and agricultural applications, such as pesticide or herbicide distribution, where precision and pressure consistency are crucial.

In contrast, other types of pumps that emphasize portability, adaptability, or lower costs might not provide the same level of pressure and reliability, which is why those characteristics do not apply to piston pumps. Therefore, the characterization of piston pumps as the most expensive and used for high pressure aligns accurately with their design and functional purpose.