Liquid Ring Vacuum Pumps

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When atmosphere has been removed from an enclosure, the area within the enclosure is called a vacuum. A complete vacuum is a space devoid of pressure. In practice, it is impossible to create a complete vacuum. Read Moreā€¦

Liquid Ring Vacuum Pumps Liquid ring vacuum pumps are vacuum pump systems that make use of a liquid seal to maintain the negative pressure of a vacuum. Vacuum pumps are devices that remove atmosphere from an enclosure.
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Leading Manufacturers

Salt Lake City, UT  |  800-465-1004

LACO Technologies manufactures high vacuum pumps and systems, including rotary vane vacuum pumps, liquid ring vacuum pumps, dry vacuum pumps and refurbished vacuum pumps. See our website for more information on our other vacuum pumps, leak detectors, vacuum chambers and accessories. Our representatives are available to answer any of your questions.

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LACO Technologies, Inc. $$$

Gardena, CA  |  310-667-4375

McKenna Engineering has over four decades years of experience developing vacuum pump solutions for every industry under the sun, around the world. Markets served include chemical, aerospace, high tech, and many more. We are an ISO 9001:2015 certified company.

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McKenna Engineering $$$

Azusa, CA  |  866-332-0500

PTB Sales is a leading vacuum pump supplier—new and used—providing a complete line of industrial vacuum pumps including rotary lube, cryogenic, diffusion, ion, turbo pumps; rotary vane vacuum pumps; rotary piston vacuum pumps and dry vacuum pumps. "What you need, when you need it."

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PTB Sales $$$

Clackamas, OR  |  800-453-1340

Manufacturing and remanufacturing industrial rotary piston pumps and rotary vane vacuum pumps, Trillium accommodates your needs. Our years of experience within the vacuum industry is available to you if you have process related pump questions or are looking to upgrade an existing system. Our large inventory of pumps enables us to offer fast, cost effective solutions to line down situations.

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Trillium $$$

Cedar Knolls, NJ  |  973-455-0440

We take all necessary measures to help ensure a high-quality product and delivery on schedule. Our plant houses engineering, machining, fabrication, welding, assembly, testing, sandblasting, painting and packing facilities. We stock most common components for our vacuum system product lines; and, we maintain an extensive raw material inventory at all times.

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Unique Systems, Inc. $$$
placeholder image LACO Technologies, Inc. McKenna Engineering PTB Sales Trillium Unique Systems, Inc.

No machinery can completely remove atmospheric pressure from a space, but different vacuums can create varying levels of low atmospheric pressure depending on their construction. Liquid ring vacuum pumps are not the most powerful vacuum pump systems, but they are effective and reliable.

They are used in many industrial processes including the vacuum forming of products like egg cartons and other forms of packaging. They can also be used in more complex industrial applications like soil remediation (the collection of contaminated groundwater) and petroleum refining.

Liquid Ring Vacuum Pumps Liquid Ring Vacuum Pumps - Busch LLC

Vapor recovery processes, which involve the reuptake of vapors created or released by an industrial process, are often accomplished with the use of a liquid ring vacuum pump. Liquid ring vacuum pumps are made up of a circular enclosure, a rotating vane with paddles, a set volume of liquid and openings for intake and outlet of gas from the vacuum enclosure.

The liquid in a liquid ring vacuum is often water, but it can also be oil or another liquid. Depending on the properties of the gas being evacuated, water or oil may not be appropriate because of reactivity concerns. Regardless of whatever liquid is used, the process by which liquid vacuum pumps create a vacuum is always the same.

The spinning of the rotating vane causes the liquid to form a ring around the outside of the circular enclosure. This creates an air-tight seal and individual compression chambers between each of the vane's paddles, all of which are partially submerged in the liquid at all times.

As the vane spins, it draws air through its inlet, compresses it and forces it through the outlet. The expelled atmosphere cannot rush back in through the pump because of the liquid seal.

Liquid Ring Vacuum Pumps Informational Video