jet ejector pump

A jet ejector pump operates by passing a fluid through a venturi nozzle, which creates suction. This suction then draws in a second stream of fluid, entraining it with the first. This principle is also seen in aspirator pumps, where water flowing through a venturi nozzle creates suction for drawing in air. Steam ejectors, a type of jet ejector, are commonly used for moving large volumes of vapor and gas at low pressures. High-velocity steam transfers momentum to the gas, which is then drawn into the pump. This mixture passes through a diffuser, converting kinetic energy into pressure energy, thereby compressing the gas from a low to a higher pressure. Jet ejector pumps have been in use since around 1850. An air ejector is a device that uses a stream jet's suction to remove air and gases from steam condensers, or it can be a small jet pump.12