Which type of pump uses a vacuum to draw fluid?

A diaphragm pump is a type of pump that uses a flexible diaphragm to create suction, thereby drawing fluid into the pump chamber. When the diaphragm flexes inward, it reduces the volume of the chamber, creating a vacuum that pulls fluid in from the supply source. This mechanism is particularly effective for handling various types of fluids, including those that are viscous or contain solid particles.

The operation of diaphragm pumps allows for precise control of the fluid flow, making them ideal for applications that require careful dosing or the transfer of sensitive materials. Their inherent ability to create a vacuum helps in reducing the risk of cavitation and improving efficiency when pumping fluids under certain conditions.

Other pump types, while effective in their own right, operate on different principles. Positive displacement pumps also push fluid but do not rely on creating a vacuum; instead, they mechanically displace a fixed volume of fluid with each cycle. Centrifugal pumps utilize rotational energy to move fluids and are not designed to create a vacuum for drawing fluid. Gear pumps operate by trapping fluid between teeth of gears, relying on the mechanical action of the gears rather than a vacuum to draw in fluid. Each of these pump types serves distinct functions suited to different applications, but it is the diaphragm pump that specifically employs