Venturi Vacuum Generator Vs Vacuum Pump | Selection Guide

Views: 539     Author: Site Editor     Publish Time: 2021-10-09      Origin: Site

Would you want a vacuum pump or perhaps a venturi?” is a popular question asked by a salesperson when discussing a vacuum installation. The end consumer will almost always choose a vacuum pump because he "there is not enough compressed air." Even if he has adequate compressed air, this is a typical statement. They emphasize on the compressed air due to the energy factors. But is it the best decision from the start? 

Purchasing a vacuum system should never be done on the spur of the moment. The investment has a one-time purchase price as well as continuing costs for operations and maintenance. Manufacturers of both Venturi vacuum systems and motor-driven (mechanical) vacuum pumps are available as options.

This article provides basic comparison data to help a salesperson or design engineer make a more informed selection about the various pump and venturi alternatives available.

Let us evaluate which device is the best for you in the following guideline regarding venturi vs vacuum pump:

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How does the venturi vacuum generator work?

When Giovanni Venturi, an 18th-century Italian physicist, discovered that forcing air through a conical nozzle increases velocity while decreasing pressure, neither he nor anyone else could have predicted that this discovery would lead to the invention of one of the most widely used and contentious products in the industry today: the Venturi vacuum generator.

Compressed air powers a vacuum venturi or ejector (the same mechanism). A vacuum pump is powered by an electric or, on rare occasions, a hydraulic motor. The compressed air utilized for the venturi, on the other hand, requires a compressor with a power of around 0.9 hp, and the pump requires a motor with a power of about 0.25 hp.

The working principle of the Venturi vacuum launcher is that when the wind blows through the barrier, the air pressure near the port above the leeward side of the barrier is relatively low, which produces adsorption and causes the flow of air, which changes the airflow from thick to thin to speed up the gas flow rate causes the gas to form a "vacuum" zone behind the outlet of the venturi vacuum tube. 

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Advantages of venturi vacuum generator

1.Wide range of applications

Generate high vacuum and amplify flow, generate strong conveying force, and move any material easily. Venturi vacuum generators are employed in a wide variety of industrial applications. Vapors or fumes from process vessels, priming pumps, vacuum drying of air conditioners and other systems, initializing a siphon, and machine shop work holding processes are all common applications. Pick and place, clamps, chuck, alignment, and surfaces mounting are all examples of machine shop procedures.

2.reduce costs

Electricity is expensive nowadays. You must use it wisely. How would you use it wisely when you have to clean every day with a vacuum cleaner? You should choose the venturi vacuum generator. It helps in cleaning the house without spending electricity. Reduce energy costs by using less air consumption and using less pressure. The venturi vacuum generator saves you from paying a hefty amount of electricity bill on a daily basis. 

3.No pollution

Due to the straight-through design, it is unlikely to pollute the airflow and can prevent clogging. You can spend a significant amount of time cleaning every day. If you use an eco-friendly model of vacuum venturi generator, it would keep the air around your house clean. It does not generate heat, which is also an additional benefit.

4.Easy to operate

It is convenient to operate the vacuum venturi generator. It is easy to use the Lightweight and portable vacuum venturi generator. The simple configuration of the machine increases the convenience of the people. Any beginner can also easily operate the vacuum venturi generator. 

Another greatest benefit of the vacuum venturi generator is that it is convenient to assemble and disassemble it. If you want to clean it, you would finish the task in no time. 

5.A variety of materials and models are available

There are a variety of materials to choose from: anodized aluminum/hard-anodized aluminum, 304/316L stainless steel, and Teflon. The materials are processed to ensure the longevity of the product life cycle. Every product offers unique benefits to the owners. The material of the venturi pump increases the efficiency as well as the productiveness of the vacuum generator to a greater extent.

These are some of the greatest advantages that should be considered while comparing the Venturi Vacuum generator versus vacuum pump. The venturi has unique benefits that increase its value in the market. If you have never known about the venturi pump beforehand, make sure to read the above information twice. This is how you will be able to decide most efficiently. 

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What Is a Vacuum Pump?

The vacuum pump is a device, invented in 1650 by Otto von Glick. It removes air and gas molecules from a sealed or confined space, thereby creating a partial vacuum. Sometimes a vacuum pump will remove gas from an area, leaving a partial vacuum or pumping water from one area to another.

Simply put, vacuum devices are?mechanical devices. These devices?allow air and gas molecules to be removed from a sealed compartment for creating?an air- and/or gas-free environment. Their primary function is to clean as well as seal. Based upon the type of media being pumped through them, vacuum pumps are available in water-based versions as well as dry models.

The invention of vacuum pumps in 1650 was a breakthrough?for modernization and progress in the fields of technology, equipment, and engineering. Vacuum pumps have been in high demand in business and commercial production, automotive, and other mechanically-driven activities up until now. As technology advances, so does the role of vacuum pumps in the market, which has resulted in a slew of new inventions in fields other than mechanical engineering.

These vacuum pumps are extremely adaptable, depending on the type of vacuum pump you purchase. Take, for example, dry vacuum pumps. This type of vacuum pump could be utilized for a variety of applications.

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How does the vacuum pump work?

When a high suction capacity is required or compressed air is unavailable, electric vacuum generators, also known as vacuum pumps, are employed. Vacuum pumps work by sucking air molecules out of the vacuum chamber. It comprises a rotary impeller with carbon blades that are eccentrically attached (A). The impeller is forced against the housing's wall by centrifugal force, resulting in a good seal. With the spinning of the impeller, the size of each chamber (B) changes. The air inside the chamber expands as the chamber grows larger. As a result, the pressure in the chamber drops, generating a partial vacuum.

The rotating shaft removes air and gas molecules in the sealed space. This action gradually reduces the air density in the enclosure, thereby forming a vacuum. As the pressure in the enclosure decreases, it becomes more difficult to remove the extra particles. The energy produced by the vacuum pump depends on the amount of gas discharged and the difference between the internal and external pressure generated.

Rotary vane vacuum pumps, Turbomolecular vacuum pumps, liquid ring vacuum pumps, diaphragm vacuum pumps, and scroll vacuum pumps are the five primary types of vacuum pumps.

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Advantages of vacuum pump

In this section, we are going to discuss the advantages of the vacuum pump. These benefits will decide whether you must go for the vacuum pumps or not:


The vacuum pumps are highly efficient devices. They help in moving large amounts of air/low vacuum. The efficiency of the vacuum pump lies in its capability of handling large masses of air. Thus, it has greater efficiency.


The vacuum pump is relatively strong and has a long service life. Due to its great quality construction, the vacuum pump lasts longer. There are also different model types of vacuum pumps available in the market. Each model has unique features that add to its durability. The durability is the best feature among all of them. 


The vacuum pumps are highly powerful machines. They help in converting pressure to flow. Due to this reason, the vacuum pump requires higher pressure to run. This property means that vacuum pumps are commonly employed in domains such as the food business for pumping fluids such as water, cocoa, and syrups, as well as the cosmetics and chemical industries for gels and creams. They are also employed for rotational evaporation. You can also use the volatile compound treatment. Furthermore, they are well-suited to continual use.

4.Collect dust

This is the most generalized task of vacuum cleaners. You can clean the floors as well as other surfaces with the help of a vacuum cleaner. The vacuum pumps collect the dust and dump it inside a jar or a pouch. It keeps the house cleaned as it sucks every bit of sand. So, one of the greatest advantages of the vacuum pump is that it can collect dirt, dust, and debris. 

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Venturi Vacuum Generator Vs Vacuum Pump

Venturi vacuum generators can be used for many of the same applications as vacuum pumps. Compared with vacuum pumps, the main advantages of the Venturi system are its compactness, robustness, simple configuration, and no maintenance. When exhausting continuously-choosing a low-pressure vacuum pump can save energy costs. However, if you are looking for intermittent material handling, then when using compressed air, a compressed air-operated ring vacuum generator with an instant on/off switch can save energy costs.

Before purchasing a vacuum system, consider the following seven factors.

1.What Are the Energy Costs for running Vacuum Pumps and Venturi Pumps?

Venturi vacuum systems are devices that use compressed air for functioning. It may appear to be a good deal at first because the upfront cost is lower than that of a mechanical vacuum pump, saving you a modest amount on the original investment.

However, there are additional expenditures associated with a huge air compressor, such as maintenance. Furthermore, depending on the size and kind of Venturi vacuum, the energy necessary to run the supporting compressor ranges from eight to seventeen times that of a solo mechanical pump.

A standard model of the vacuum pump requires the 05 HM motor. On the other hand, the comparable size of the Venturi generator takes up the compressed air that is worth 40 HP to 50 HP.

What would you be comfortable running in your house or business organization It also comes down to your choice. If you want to take our advice, we recommend you to go with the vacuum pumps as that is a low-cost and energy-efficient solution. 

2.Energy Efficiency – Venturi versus Vacuum Pumps

Energy efficiency is another most important consideration. In order to consider the energy efficiency, we would like to consider the power required by both devices. For instance, The vacuum will be turned on and off by a vacuum solenoid valve, and the pump will run continuously. The venturi generator will work whenever the owner needs it. During a 24-hour shift, the vacuum pump consumes 0.25 hp all day. Every three seconds of a 15-second cycle, the venturi uses 0.9 hp. As a result, the venturi uses 0.18 hp of compressed air on average throughout the same cycle period. As a result, the venturi is "more efficient" in terms of overall operating expenses.

So, venturi utilizes eighth time more energy than the costs for running a mechanical vacuum pump. 

Do you know how big is the amount of energy consumed by the venturi? It is the most expensive to run the vacuum venturi generators. 

For more than a decade, energy prices have grown year after year, and using a system that chugs electricity will become more expensive as time goes on.

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3.Cost-Effectiveness of the Vacuum Pump and Vacuum Venturi Generator

Cost-effectiveness analysis can help identify areas where resources could be diverted to accomplish more. It emphasizes not just the importance of transferring resources from disadvantageous to advantageous, but also the importance of redistributing resources from low-cost to high-cost initiatives.

To satisfy Venturi's requirements, you'll need to purchase an additional compressor, air dryer, filter, and regulator if your in-house air compressor is reaching capacity. That is not a budget-friendly option. On the other hand, you do not have to purchase anything for running a vacuum pump. So, the vacuum pump is more cost-effective than the vacuum venturi generator. 

4.The Noise Levels of the Vacuum Pump vs Venturi

The next important thing to consider is the noise levels. The vacuum pump also produces noise, so does the venturi generator. So, which one should you buy? There is a big difference between the noise levels of the vacuum pump and the vacuum venturi generator. A mechanical vacuum pump produces heat, but a Venturi's compressor produces around 8-10 times more. The venturi has a large motor, which generates more vibrations into the air. Thus, it creates larger noise levels that would keep disturbing you or your team. 

5.The Requirements of Venturi Piping

There are lots of requirements for the venturi piping. It increases its functionality as well as longevity. Compressed air must be routed to a Venturi vacuum system, which is extremely expensive to set up unless the machine is pneumatically driven and piping is already in position. A mechanical pump is installed beneath just next to the machinery it feeds, reducing the need for pipes. This is why the vacuum pumps win over the vacuum venturi generators. 

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6.How Much Does the Repairing of the Machines Take?

The principal source of your Venturi vacuum is the compression air. If it gets out of commission, you will have to experience lots of troubles. If your shop air compressor breaks for whatever reason, you must replace it. It will take a considerable amount of time to locate and buy the right compressor. In the meantime, you are going to lose output as well as work hours as a result of the downtime. To ensure uptime with a mechanical vacuum pump, you only need one backup pump for all of your devices.

So, the repairing of the vacuum pump is a lot easier than the venturi generator. 

Bottom Line

When comparing a vacuum pump and a vacuum venturi, you should consider different factors. From cost-effectiveness to energy efficiency, you must calculate the advantages of both devices. We have compared and analyzed the vacuum pump and the vacuum generator. You must make the appropriate choice according to your business and needs.

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