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Liquid Ring Vacuum Pump Manufacturer

Vacculex manufacturers some of the best liquid ring vacuum pumps on the market. Our VLRC series liquid ring vacuum pumps are perfect for applications that require high reliability and performance. They are also affordable and easy to use, so you’ll be able to get the most out of them quickly. Contact us today if you have any questions about our products or services!

VLRC Series Liquid Ring Vacuum Pump -Vacculex.


About Liquid Ring Vacuum Pump

Liquid ring vacuum pumps are positive displacement vacuum pump. As shown in the figure, the rotor is installed eccentrically in the pump body, and its rotation forces the working fluid to form an equal-thickness rotating liquid ring along the inner wall of the pump body. At this time, an “air chamber” is formed between two adjacent impellers, the impeller hub and the inner surface of the liquid ring. As the rotor rotates, this air chamber in the pump suction area volume gradually increases, its internal pressure decreases, so that the gas will be sucked into the pump; on the contrary, the air chamber in the exhaust area volume gradually decreases, its internal pressure rises, so that the gas will be discharged from the pump. In order to maintain a constant liquid ring, the working fluid must be continuously supplied to the pump during operation.

Find out How Our Liquid Ring Vacuum Pump Work

  1. The main difference between two-stage liquid ring pumps and single-stage liquid ring pumps lies in the pumping speed specificity curve. The pumping speed curve of two-stage liquid ring pump is relatively flat, and its efficiency can still be maintained at about 90% under the inlet pressure of 50 torr, while the efficiency of single-stage pump is reduced to 50%. Therefore, the combination of VLRC two-stage liquid ring pump and Roots pump are very beneficial to the normal operation of Roots pump.
  2. Due to the two-stage compression, the compression ratio of each impeller is small, and the vacuum pump of each impeller stage is only 5-6 times, which can better prevent cavitation, and can achieve a larger maximum differential pressure, higher exhaust back pressure, and higher reliability in the working process.
  3. Single-stage liquid ring pump is relatively easy to be made into a large pump because of its small power consumption and simple structure, and the working pressure is above 200 torr in power station, coal mine and paper industry, so single-stage liquid ring pump is more suitable.
  4. Two-stage liquid ring pump working fluid temperature rise is small, the water temperature has less influence on the inlet pressure and suction volume, which can better ensure the inlet pressure requirements.
  5. Two-stage compression is more effective in avoiding cavitation and has a longer service life, while having lower vibration and noise.

Select Our Liquid Ring Vacuum Pump

VLRC series liquid ring vacuum pump
VLRC Series Liquid Ring Vacuum Pump

It is ideal for pumping moist mixed gases as well as for pumping tiny droplet gases. Standard configurations is material all cast iron(or 316SS stainless steel) with water cooling(or air cooling), can pump at pressures as low as 4 Torr(limited by the saturated vapor pressure of the operating fluid).

B series liquid ring vacuum pump - Vacculex
B Series Liquid Ring Vacuum Pump

“B” series liquid ring vacuum pump is a simple structure and reliable positive-displacement pump, which is a single-stage pump.

KLRPV Series Liquid Ring Vacuum Pump - single stage vacuum pump supplier - Vacculex
KLRPV Series Liquid Ring Vacuum Pump

KLRPV series liquid ring vacuum pumps are suitable for pumping gas and water vapor, suction pressure can reach 33 mbar absolute pressure (97% vacuum). When the liquid ring vacuum pump works for a long time under the suction pressure close to the ultimate vacuum level (saturated vapor pressure of operating fluid), a cavitation protection tube should be connected to protect the pump.

KLRPE Series Liquid Ring Vacuum Pump - single stage vacuum pump supplier - Vacculex
KLRPE Series Liquid Ring Vacuum Pump

KLRPE series products are single-stage single-acting liquid ring vacuum pumps with the widest pumping range. As a single-stage single-acting structure form, this series vacuum pumps have the advantages of simple structure, easy maintenance, reliable operation and high efficiency skills.


Application of Liquid Ring Vacuum Pump

Vacculex liquid ring vacuum pump application in the global manufacturing market: chemical, petrochemical, chemical and pharmaceutical processes, plastics, semiconductors, vacuum furnaces and vacuum melting etc.


Solvent recovery
Freeze Drying

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Solvent Recovery
Molecular Distillation
Pneumatic Conveying

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Petroleum cracking
Oil and gas recovery
Vapor Recovery
Vacuum degassing
VOC tail gas recovery

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Industrial Vacuum

Steel degassing
Vacuum furnaces
Vacuum coating

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Crystal growth
Wafer movement
Vacuum sintering

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Liquid Ring Vacuum Pump FAQ Guide

1. What is a liquid ring vacuum pump used for?

Liquid ring vacuum pumps are rotating positive displacement machines that provide process vacuum in industrial applications. They are a popular choice because of their versatility and performance.

Some of the benefits of using liquid ring vacuum pumps include:

  • -They’re often reliable and durable, making them ideal for high-volume applications.
  • -They can be used to create vacuums ranging from low to extremely high pressures and volumes. This makes them perfect for a wide range of industries and tasks.
  • -Their rotational motion ensures even distribution of pressure throughout the pump volume, which minimizes pumping noise and improves efficiency.

2. How Liquid Ring Vacuum Pumps Work?

Liquid Ring Vacuum Pumps work by using a rotating drum to pull liquid from one vessel to another. As the drum rotates, it creates a vacuum that causes the liquid to be drawn up and into the pump. The advantage of Liquid Ring Vacuum Pumps is that they are able to transfer large amounts of liquids quickly and easily, which can be helpful in many industries.

Liquid ring vacuum pumps are a safe and reliable choice for handling dirty and potentially dangerous gas streams. These pumps utilize water or other processes compatible liquid as the sealant, meaning there are no contacting parts. This simple operation makes liquid ring pump a safe and easy option for handling applications that require high speed and low noise levels. In addition to this versatility, liquid ring pumps can also be configured as compressors for even more versatility.

Some common uses for Liquid Ring Vacuum Pumps include oil production, food processing, beverage manufacturing, chemical engineering and more. They are also increasingly being used in wastewater treatment facilities because they are able to remove contaminants such as oils, sludge and waterlogged material very efficiently.

3. Characteristics Of Liquid Ring Vacuum Pumps

Liquid ring vacuum pumps are versatile and reliable machines that can be used in a variety of industrial settings. They operate using atmospheric pressure to remove liquids or gases from the system, making them ideal for applications such as chemical processing, food production, pharmaceuticals synthesis, and oil refining.

They come in a wide range of capacities and designations, so they can meet the specific needs of even the most demanding customers. And because liquid ring vacuum pumps are so efficient and versatile, they tend to last longer than other types of pumps while providing superior performance.

One common feature that distinguishes liquid ring vacuum pumps from traditional piston pump is their impeller design. The outer portion of an impeller is made out of circular segments that rotate around a central hub – this creates centrifugal force which causes liquid to be drawn up into the pump through tiny openings called tappings. This makes liquid ring vacuum pumps highly effective at reducing friction within systems; consequently allowing them to operate at higher pressures with less wear on components.

4. What liquid is used for liquid ring vacuum pump?

The liquid used for liquid ring vacuum pump is often referred to as the working fluid or suction medium. This type of pump uses a rotating chamber filled with this working fluid which creates a high-velocity rotary flow inside it. As a result, the working fluid acts like a piston and can be compressed or expansionally lifted to create pressure in various directions.

The most common type of liquid used for these pumps is water because it has low viscosity (thickness) and is able to easily move through small channels and valves without creating excessive pressure buildup.

5. How liquid ring vacuum pump creates vacuum?

A liquid ring vacuum pump is a device that uses a rotating ring to create a vacuum. This type of pump was originally designed to remove liquids from high-pressure systems, such as fuel tanks or chemical reactors. The liquid rings are placed around the circumference of the wheel and rotate at high speeds, which causes suction and draw liquids towards the center of the wheel.

The principle behind this type of pump is similar to that used in pumps for water extraction. By creating an extreme pressure difference between two areas, you can force fluids through narrow channels and into separate containers or reservoirs.

6. What is water ring pump?

Water ring pumps are liquid ring pumps which work according to the principle of positive displacement. This means that when partly filled with gas, like side channel pumps, their self-priming capabilities are very good. This makes them a popular choice for applications where high flow rates and low head losses are required, such as Water Treatment.

7. Are there different types of liquid ring pumps?

There are three main types of fluid systems used with liquid ring pumps: once through, partial recovery, and continuous flow. Each has its pros and cons, so it important to choose the right one for your needs.

  1. Once Through: In a once through system, water is continuously fed into and right back out of the pump. Two major issues with this system are the water cost and cost of water disposal. If the water is contaminated, it will need to be cleaned prior to disposal.
  2. Partial Recovery: In a partial recovery system, some of the fluid remains in the pump for an extended amount of time. As some of the fluid leaves the pump, the reservoir continues to feed the pump to replenish it. Partial recovery systems can have shorter Lead Times than full recovery systems because less machinery is needed in order to maintain continuous operation; however they are more expensive due as less liquid stays in-pump and there is increased risk that contaminants will leach into groundwater or surface Water resources
  3. Full Recovery: In a full recovery system, all fluids (including waste) are contained within a closed-loop system and constantly recycled so it always has enough stock no matter what happens outside of its control

8. Design Advantages of Liquid Ring Vacuum Pumps

Liquid ring vacuum pumps are the most popular type of pump available, and they offer many advantages for your facility. These types of pumps have a unique design that makes them ideal for use in industrial settings.


The once-through system is a popular choice for small businesses because it has few initial costs. In this type of system, the sealing liquid will only enter once. Then the pump moves the liquid to a separator vessel. Here, the pump separates the gas from the liquid. Then the pump drains away from the liquid. No liquid recirculation takes place in this type of system. The advantage of this system is that there are not much initial costs. If you have a less critical project, this might be a good choice for you.

With the partial recirculation system, the separator recirculates the liquid and discharges it from the pump. More water will enter the pump for recirculation. The amount of liquid that leaves is equal to the amount that enters. Although this type of liquid ring vacuum pump has a little more complexity than a once-through system, it still doesn’t require much initial costs. It also uses less sealing fluid, which can be costly and environmentally harmful. If you have an application that requires a high level of seal-liquid conservation, this is an ideal type of liquid ring pump!

A total recirculation system is a great way to reduce sealing liquid use. When you need high vapor or gas services, this is the perfect solution. A total recirculation system uses liquid ring vacuum pumps to draw air through the sealant and then expel it back into the room again. This process helps create a higher level of vapor or gas, without having to use as much sealing liquid.

9. Advantages of Liquid Ring Vacuum Pumps

Liquid Ring Vacuum Pumps are one of the most popular type of pumps on the market today. These units are capable of drawing small amounts of liquid or gas at high speed and then pumping it in a continuous stream without stopping. They make it easy to process large volumes of materials quickly and easily, making them ideal for a variety of applications.

Some key advantages that LiquidRing Vacuum Pumps offer over other types of pumps include:

  • -Speed : Liquid Ring vacuum pumps can move liquids and gases at speeds up to 3,000 feet per minute which makes them very efficient when processing large quantities.
  • -Versatility :LiquidRing vacuum pumps can be used for a variety of tasks including chemical engineering, pharmaceuticals production, food processing, water treatment etc.
  • -Safety :The internal construction features self sealing valves that prevent any fluid from entering or exiting the pump while in operation minimizing potential hazard.

10. How do you choose the right liquid ring vacuum pump for your business?

Choosing the right liquid ring vacuum pump for your business can be a daunting task. There are many different types of pumps available on the market, and each one has its own unique capabilities and features.

If you’re only looking to maintain static levels or move small quantities of liquids or gases, then an internal combustion engine (ICE) powered pump may be perfect for you. These pumps use gas turbines to generate energy which is then used to run the pump motors. ICE-powered pumps are often faster and more efficient than electric power sources, so they may be a better choice if speed is important when it comes to operations.

On the other hand, if you need specialty pumping capabilities that don’t fit well into an ICE-powered machine such as offshore oil production or medical waste processing, then a rotary vane Vacuum Pump might be best suited for your needs. Rotary Vane Vacuum Pumps use centrifugal force instead of engines in order to create suctioning forces inside a fluidized material container such as tanks or containers filled with liquids or gases. This type of pumped delivers consistent pressures over long periods of time without feedbacks from mechanical devices that could wear out over time.

11. What makes a liquid ring vacuum pump different from other vacuum pumps?

A liquid ring vacuum pump is unique because it uses a circulating fluid to create a partial vacuum. This circulatory system enables the pump to move much greater volumes of air than other pumps, which makes it ideal for applications that require high pressure or suction. Additionally, liquid ring Vacuum Pumps are less likely to experience clogging and failure due to debris buildup compared with traditional u-shaped or S shaped pumps.

This technology has been put to use in many industries, including manufacturing, oil and gas extraction, food processing, pharmaceuticals and biochemistry research. So if you’re looking for an efficient vacuum pump that can handle high volumes and pressuresomescelling requirements then a Liquid Ring Vacuum Pump may be the right choice for you!

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