Which type of pump has the highest pressure capability?

The diaphragm pump has the highest pressure capability among the options provided. This type of pump operates using a flexible diaphragm that moves back and forth, creating a vacuum that draws fluid into a chamber. When the diaphragm moves in the opposite direction, it expels the fluid, generating a high-pressure discharge. Diaphragm pumps are specifically designed to handle high pressures and can often operate at pressures well above those of other pump types, making them ideal for applications where precision and pressure are critical.

In contrast, while centrifugal pumps are widely used due to their ability to move large volumes of fluid efficiently, they are typically not designed for high-pressure applications. They work by converting rotational kinetic energy into hydrodynamic energy, which can limit their pressure capability compared to diaphragm pumps.

Piston pumps also generate high pressure as they utilize a reciprocating motion and can handle high-viscosity fluids, but they usually operate at pressures lower than diaphragm pumps and may have limitations in continuous operation.

Roller pumps, on the other hand, are effective for transferring fluids but generally have lower pressure capabilities compared to diaphragm and piston pumps. They create flow by rolling action, which can lead to compression but is better suited for lower pressure tasks.

Thus, the diaphragm pump is recognized for its