For what purpose are diaphragm pumps typically used?

Diaphragm pumps are specifically designed to handle high-pressure applications effectively. They operate by using a flexible diaphragm that moves back and forth, creating a change in volume that draws in fluid and then expels it under pressure. This mechanism allows diaphragm pumps to generate and maintain high pressure, making them well-suited for tasks that require transporting fluids over long distances or against high resistance.

Additionally, diaphragm pumps can handle a variety of fluid characteristics, including corrosive and viscous materials, further enhancing their versatility in high-pressure situations. Such applications may include the transfer of chemical solutions, slurries, or even water in various industrial settings where maintaining high pressure is crucial for operational efficiency.

In contrast, the other options highlight scenarios where diaphragm pumps are less effective or appropriate. Low-pressure applications do not typically require the robust capabilities of diaphragm pumps; rather, simpler pump types might be sufficient. Air-based applications often utilize different pumping mechanisms designed for gas rather than liquids. Granular applications could involve solid materials for which diaphragm pumps are not ideally suited, as they primarily deal with liquids. This comprehensive understanding reinforces why diaphragm pumps excel specifically in high-pressure contexts.