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Difference between Liquid Ring Vacuum Pump and Compressor


In the industrial world, the liquid ring vacuum pump and liquid ring vacuum pump compressor seem similar and both are useful equipment in the producing activities. In this post, the author would illustrate the difference between vacuum pump and compressor.

What is A Liquid Ring Vacuum Pump?

Kenflo liquid ring vacuum pump is a rotating positive displacement machine that is widely used in wide applications such as chemical, electrical power, environmental, and textiles industries. It mainly be used for creating a process vacuum during the manufacturing process. It sometimes can be used as a gas compressor.

kenflo liquid ring pump

Kenflo Liquid Ring Pump

Sk water ring vacuum pump is a single-stage, double acting, radial inlet and exhaust water ring vacuum pump; It is listed as energy-saving electromechanical products by the state. Sk type water ring vacuum pump is usually used to pump gases that do not contain solid particles, are insoluble or slightly soluble in water. Because the gas is nearly isothermal compressed during the working process of the water ring pump, it is also particularly suitable for the suction and pressure delivery of flammable and explosive gases. Pumps generally use water as working fluid.


How Does A Liquid Ring Vacuum Pump Work?

The principle of the kenflo water pump is relatively simple. The fluid is fed into the pump housing. As the rotor which is located on cylindrical housing spins, the fluid is thrown by the centrifugal force to the outside. The process is similar to a washing machine.

What's A Liquid Ring Vacuum Pump Compressor?

Liquid ring vacuum pump compressor is a rotative machine to compress gases. During the working process, it compresses gas by rotating a vaned impeller located eccentrically within a cylindrical casing.

How Does A Liquid Ring Vacuum Pump Compressor Work?

Here is the detail of the working process. The liquid is conveyed into the pump. Then, as the centrifugal acceleration, the liquid would form a moving cylindrical ring against the inside of the casing. Then, the liquid ring also forms a series of seals in the space between the impeller vanes, as a result forming the compression chambers.

Can A Vacuum Pump be Used as A Compressor?

As a matter of fact, the normal vacuum pump produced by water pump suppliers can not be able to meet the needs of a compressor. However, some industrial vacuum pumps are powerful enough to act as a compressor.


liquid ring vacuum pump compressor

Liquid Ring Vacuum Pump Compressor

The Difference in Impeller Circumferential Speed

Due to the difference in the pressure difference between the suction chamber and the compression chamber, their impeller's circumferential speeds are different.


Speed Range



Vacuum pump


The Difference in the Compression Ratio Range

The compression ratio range indicates that the compression ratio that is at a higher efficiency point. Generally speaking, the kenflo water ring vacuum pump has a relatively higher compression ratio than the compressor.

Where to Buy Liquid Ring Vacuum Pump & Compressor?

You may find a quality liquid ring vacuum pump or liquid ring vacuum compressor. Kenflo could be your ideal cooperator. Established in 1954, Kenflo becomes one of the greatest liquid ring vacuum pump manufacturers and is a reputed enterprise covering R&D, production, and sale. Kenflo also owns advanced production facilities and complete production means, including mold manufacturing, casting, welding, heat treatment, machining, assembly, and testing.


The major difference between liquid ring vacuum pump and compressor are their working principle and applications. In short, some liquid ring vacuum pumps can work as a compressor. Although they are different, they still have the commonality that they play an important role in the industrial world.