How many moving parts are present in a jet pump?

A jet pump is designed to operate without any moving parts, which is a key feature that distinguishes it from many other types of pumps. The operation of a jet pump relies on the principles of fluid dynamics, specifically the Venturi effect, where high-velocity fluid flow creates a low-pressure area that draws in additional fluids. This mechanism allows the jet pump to effectively move substances without the need for moving components, making it simpler and often more reliable while also reducing maintenance requirements. The absence of moving parts minimizes mechanical wear and provides an efficient solution for certain applications, such as in drainage or in the lifting of fluids.