Popularized rotary jet pump

The advantages are obvious, and the disadvantages are certainly the same. Price? Material optionality? etc.

The main advantages include relatively high efficiency. Since the seal is located at the inlet, it only bears the inlet pressure, so the seal has a long life, fewer wearing parts, stable operation, and low noise. The flow rate of the high-speed pump can be achieved without increasing the speed, so most of the time there is no need for gearboxes, oil stations and other configurations. The main disadvantage is that the rotor cavity cannot be completely sealed and emptied. High-risk media should be used with caution without on-site replacement measures. The price is basically close to or slightly lower than the high-speed pump. There are basically no limitations in terms of materials, both carbon steel and stainless steel can be made. At present, after more than ten years of development and application, domestic products have become relatively mature and can completely replace imports.

If the vortex pump is not satisfied with the small flow rate and high head, you will choose a high-speed pump~~~~Now it seems that there are more choices?

Rotary jet pump is indeed the best choice for small flow and high lift fields. It has few parts, low pressure sealing, high efficiency, isolation of bearings from media, etc. You can search online.

It seems that it is also called pitot tube pump in some places. We have used it here before. It was used as a water injection pump for hydrocracking. The failure rate of the plunger pump was too high. . .

Is this better to use than a plunger pump?

The ones we use here are actually not good and are no longer used. This is due to various reasons including the manufacturer's design and manufacturing, including the owner itself.

Is a rotary jet pump the same thing as a "vortex pump"?