single stage vs two stage vacuum pump

Single Stage Vs Two Stage Vacuum Pump

One of the most controversial matters we get to is about the single-stage vacuum pumps and double-stage vacuum pumps. Yet, these two pumps can be identified through a battle of single-stage vs two-stage vacuum pumps. Keeping all these aside, precise definitions of both these vacuum pumps can meet our confusion lot.

Single-stage or 1 stage pumps usually work with a specific amount of vacuum level. Whereas, a two-stage vacuum pump always stands first in conveying deeper vacuum levels. But for those who want an affordable vacuum pump, a single-stage pump just is for them.

From the above perspective, you must have understood that single-stage pumps and double-stage pumps are superior in their own way. Now the question is, which one is going to be preferable for us? To figure this out, I am going to show you a prescribed juxtaposition between single-stage vacuum pumps and double-stage vacuum pumps.

Difference between single-stage and two-stage vacuum pump: Comparison table

Features Single-Stage Vacuum Pump Double Stage Vacuum Pump
Impellers One Two
Rotor One pair Two pair
Vacuum level Low vacuum level High vacuum level
Price Less expensive More expensive
Stages One stage Two-stage
Used for Rough vacuum levels Improved vacuum performance

What is the difference between 1-stage and 2-stage vacuum pumps?

The main difference between a 1-stage vacuum pump and 2 stage vacuum pump is their way of operating. Nonetheless, a single-stage vacuum pump’s work is to generate vacuums. On the flipping side, a second stage vacuum pump’s work is to clean the entire system of vacuum. As a result, the two-stage vacuum pump ensures a deeper vacuum level.

All in all, it is inevitable that a two-stage vacuum pump is better than a single-stage vacuum pump. Although a 1 stage vacuum pump does not perform less than expected, it is somewhere behind 2-stage pumps. So yeah, a double-stage pump produces deeper vacuum levels than those one-stage vacuum pumps.

Single-Stage vs. Two-Stage Vacuum Pumps: Which Is Better?

While judging the efficiency of single-stage vs two-stage vacuum pumps, two-stage pumps are quite better. The reason is, a two-stage vacuum pump produces deeper vacuums than a single-stage vacuum. But that does not mean single-stage vacuum pumps are inferior either.

If you see, a single-stage vacuum pump is not inferior either. It leaves no stone unturned in providing a moderate amount of vacuum levels. Those who bother with only sufficient cleaning can simply rely on single-stage vacuum pumps.

What is a 1-stage vacuum pump?

single stage vacuum pumpA single-stage vacuum pump is none other than a centrifugal pump. Generally, a single-stage vacuum comes with only one impeller. However, the highest lift is 125 meters. Also, a single-stage vacuum pump is easy to repair and offers large flows. Although this single-stage pump comes with a simple structure, it always maintains a stable performance.

With sliding blades, cylinders, and one pair of rotors, a single-stage pump performs amazingly. In the same way, it gives enough convenience to the rough vacuum levels.

Single Stage Vacuum Pumps: What Do You Need to Know?

Nonetheless, a single-stage pump tends to be lightweight within a small volume. Besides, the design of a single-stage vacuum produces fluid flow in times driving by a motor.

Not only that, but a single-stage vacuum pump also works by exhausting the pump’s built-in chamber. Therefore, this vacuum pump smoothly separates oil from its pumped gas. And when the oil gets back to its actual place, the gaseous substances start to exhaust again.

Which Is the Best Single Stage Vacuum Pump for You?

If you are concerned about the CFM of any stage vacuum pump, go through the product’s specifications. Well, some single-stage pumps include 4.5 CFM, 2.5 CFM, or 6.0 CFM.

Here is some best single-stage vacuum pumps you can give a look at.

Benefits of the Single-Stage Vacuum Pump

Here are some amazing benefits you can get from a single-stage vacuum pump.

  • Let dust, dirt, and debris pass away with a “straight-through” design. While passing away the components, single-stage pumps do not allow cloggings.
  • Ensures a long operational life by resisting contamination. Besides, a single-stage vacuum pump does not have any moving parts and removes dirt and debris with a click.
  • Generates vacuum levels and flow rates 18 inches. As a result, single-stage pumps adopt fewer missed picks for certain applications
  • Works great as a large vacuum at high levels.

When to Use a Single-Stage Vacuum Pump

In many operations, we get to see lots of dirt and dust. Again, handling card boxes make us see different contaminants too. If you want to overcome these problems with a suitable substitute, a single-stage vacuum pump is a fine choice. Or if you see any rough vacuum levels, nothing can be better than a single-stage vacuum pump.

What is 2 stage vacuum pump?

two stage vacuum pumpBefore we go through the actual comparison, let us know about the 2-stage pump precisely.

A dual-stage pump is a reliable vacuum pump that comes with two suction impellers. And these two impellers operate side by side at the same time. Again, while working with a two-stage pump, you have to decide whether you want more pressure or more volume. Just select your choice from its pump panel.

It would be great if you are comfortable with the pump’s transfer valve. Also, remember to make a selection between pressure and volume times of using a 2-stage vacuum pump.

Two-Stage Vacuum Pumps: What Do You Need to Know?

Like single-stage vacuum pumps, two-stage vacuum pumps come with impellers. But the difference is, two-stage pumps have two suction impellers that operate side by side. Those who will be operating must choose between more pressure and volume. Well, you can find these options on the pump panel.

Dual-stage vacuum pumps or two-stage vacuum pumps are high in a mated vacuum and low in a vacuum. Mainly, the low vacuum stage plays a crucial role in improving the performance of your vacuum pump. The reason is, the low vacuum stage in a two-stage vacuum pump compresses the gas into atmospheric pressure.

In contrast, a two-stage vacuum pump’s high vacuum stage amalgamates the process and sends it to the second stage.

Which Is the Best Two Stage Vacuum Pump for You?

As said before, the CFM of all two-stage vacuum pumps is not the same. Now then, two-stage pump products own 5 CFM, 2.5 CFM, 3 CFM, or even 9 CFM.

Autogen Vacuum Pump is one of the best two-stage vacuum pumps in the market. In this product, you will find numerous applications, like- food processing, milking cow, degassing wine, and refrigerant recharging. However, this pump is available on Amazon in good quantity. Click here to shop for two-stage vacuum pumps on

On the other hand, the Vevor two-stage vacuum pump contains high-quality materials. It not only delivers a longer service life but also a strong suction power. So for those who are looking for a first-rate vacuum pump, Autogen Two-stage Pump and Vevor Two-stage Pump would be worthy options.

Benefits of the Two-Stage Vacuum Pump

By accumulating all information about the two-stage vacuum pump, we got to know how efficient this pump is. Other than that, a two-stage pump will always give a high level of vacuum performance. Thus, getting numerous benefits from a two-stage pump is very obvious to us.

  • Suitable for numerous process applications
  • Performance is more brilliant than a single-stage vacuum pump.
  • Requires less water and saves energy within minimum power
  • Convenient with lots of accessories. Such as corrosion-resistant coatings and mechanical seals.

When to Use a Two-Stage Vacuum Pump?

As mentioned before, a two-stage vacuum pump comes with two rotors and one vane. Accordingly, the first stage of it simulates a vacuum, whereas the second stage engages in cleaning the entire system. So whenever you want to banish dirt from your places, you will need a reliable vacuum performance.

For now, a vacuum pump with pressure can come out really handy. In such cases, a two-stage vacuum pump will be a fine option for you.

A Quick Guide to the Differences Between Two-Stage Vacuum Pumps

A single-stage vacuum pump offers a definite amount of vacuum performance. Moreover, their price is affordable too. Whereas, a two-stage vacuum pump is excellent for high vacuum performance. Similarly, its price is high in the market.

Now the thing is, users cannot expect high performance from a single-stage vacuum pump. So if you are okay with medium pressure from a vacuum pump, a single-stage vacuum pump will be a fine choice.

On the other hand, a two-stage vacuum pump delivers maximum vacuum power. For instance, a hotel or lodge requires first-rated vacuum pumps. In such cases, a two-stage vacuum pump would be a reliable object.

Most of us think that dual-stage vacuum pumps are more reliable than single-stage vacuum pumps. But this case is only for vacuum performance. At a low cost, single-stage pumps also serve like magic too.

Difference between single-stage and two-stage vacuum pump

The main work of a single-stage vacuum pump is to exhaust the pump’s built-in chamber and separate oil from pump gas. On the flipping side, a two-stage vacuum pump is made with two vanes and motors. In these two stages, the first stage generates a vacuum, and the last stage works on cleaning the vacuum.

By considering these aspects, we can say a single-stage vacuum pump somewhere lacks in providing deeper vacuums. But the two-stage vacuum pump uses both of its stages and ensures deeper vacuum levels.

Are the best vacuum pumps one-stage or two-stage?

In a battle of 1-stage vs 2-stage vacuum pumps, two-stage pumps win over single-stage pumps. The reason is, dual-stage vacuum pumps consume higher pressure. Hence, getting a perfect vacuum performance from a two-stage vacuum pump is quite inevitable.

Anyways, a single-stage vacuum pump serves great in medium vacuum pressure. Furthermore, they are less expensive and give no complaints regarding their performance. But that is true, single-stage pumps do not have deeper vacuum levels like two-stage vacuum pumps. So yeah, the best vacuum pumps are the two-stage pumps.

Frequently Asked Questions

Can a vacuum pump run for a long time?

Yes, a vacuum pump can run for as long as you need. Make sure that your vacuum’s level is not becoming too hot. Also, you will have to check the oil level which is situated in the mold. After figuring out all the levels, you can simply leave your vacuum pump running overnight.

What can make a vacuum pump fail?

There are numerous reasons for a vacuum pump to fail. Well, the most common causes are- electrical problems of the unit, broken belts, or failed vacuum hoses. Whenever the engine is on, the pump does not take any breaks and operates constantly. As a result, you will get to see many tears and wear which are other reasons for failing a vacuum pump. Furthermore, the braking performance starts to reduce accordingly.

How can I maintain a vacuum pump?

Here are some easy steps which can help you to maintain your vacuum pump.

  • Read the manual properly and check your pump’s oil.
  • Use an inlet block to warm up your pump.
  • Remember not to block your pump’s outlet.
  • Prevent your vacuum from corrosive vapors with the help of an inlet cold trap.
  • Take gas ballast to work with some condensable vapors.
  • Use an inlet filter to safeguard your pump from some particulates.
  • Purge the solvents from your pump’s oil and run the pump after using it.

How to size a vacuum pump?

Generally, vacuum pumps do two things. One is decreasing the atmospheric pressure. And the second thing is, circulating the gas. Considering these two terms, anyone can determine the size of a vacuum pump. Just think of how deep your vacuum needs to be and how much gas remains in its chamber.


Hopefully, you got to affiliate a lot about the differences between single-stage pumps and double-stage pumps. Anyways, both of these wins in their own way. Though the battle of single stage vs two stage vacuum pump clearly stated their features, still there is more to differentiate between them.

Especially the newbies, who will be choosing between single-stage pumps and double-stage pumps, shall go for the single-stage ones. Conversely, the double stage pumps are a superb choice for high-level vacuum performance.

If you are on a tight budget, a single-stage vacuum pump can serve you perfectly within a medium vacuum level. But if a high level of vacuum performance is more important to you, then double stage pumps are the best options.

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