Jet pumps for industrial use, also known as the Jet pump and injectors. Use of high pressure fluid injection to the transmission fluid pump. Nozzles, mixing chamber and expansion tube, and so on. For the sake of smooth-running operations, set a vacuum chamber in the pipe (also known as breathing room), to allow the two to mix, there is a mixing chamber behind in the vacuum chamber. Operation, the working fluid at high speed from the nozzle, vacuum formed low pressure, make the liquid suction vacuum chamber, then into the mixing chamber. High energy work in the mixing chamber fluid liquid mix transported and low energy, the energy exchange, speed has been consistent from the pipe into the diffusion Chamber, slow, static pressure pick-up, achieve the purpose of conveying liquid.