In a non-displacement pump, what is generated within the eye of the pump?

In a non-displacement pump, the process of fluid movement creates a low pressure area within the eye of the pump. This occurs because non-displacement pumps rely on the kinetic energy of the fluid rather than positive displacement to move the liquid. As the pump impeller spins, it imparts velocity to the fluid. This high-speed motion causes a drop in pressure within the eye, which is the central region of the pump where the fluid enters.

The creation of this low pressure facilitates the flow of liquid into the pump, allowing it to effectively draw in and move the fluid through the system. This principle is fundamental to the operation of pumps such as centrifugal pumps, which are classified as non-displacement pumps. Understanding this operation is critical for diagnosing performance issues and optimizing pump efficiency in heavy-duty applications.