Best Compressed Air Separators of 2025

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Compressed air separators are essential components in industrial settings that ensure the highest quality and efficiency of compressed air systems. These separators effectively remove moisture, oil, and other contaminants from the compressed air, preventing damage to equipment and ensuring optimal performance. By efficiently separating the impurities, compressed air separators help maintain the productivity and longevity of pneumatic tools and machinery. With a range of sizes and designs available, these separators can be tailored to meet the specific needs of various industries, providing clean and reliable compressed air for a wide range of applications.
At a Glance: Our Top Picks
Top 10 Compressed Air Separators
Webstone NIBCO Air Separator
The Webstone Air Separator is designed to enhance the performance of your compressed air system. By minimizing noise, it creates a more pleasant working environment for you. Additionally, it boosts system efficiency, ensuring that your operations run smoothly and effectively. This product also helps reduce wear on system components, which can save you money on repairs and replacements. Plus, it requires no regular maintenance, making it a hassle-free addition to your setup. With these benefits, you can enjoy a reliable and efficient air system without the constant upkeep.
Automatic Air Separator Taco 1 in.
The Taco Automatic Air Separator is designed for HVAC systems, making it an essential tool for maintaining efficiency. It helps to remove moisture and contaminants from compressed air, ensuring your HVAC controls and thermostats function smoothly. By doing so, you can prevent potential damage to your equipment, which can save you time and money in repairs. This automatic separator operates at a pressure of up to 150 psi, providing reliable performance. Manufactured in the Netherlands, it reflects high-quality standards, making it a dependable choice for both commercial and residential applications.
PneumaticPlus SAMG Series Air Dryer
The PneumaticPlus SAMG Air Dryer is designed for effective water removal in compressed air systems. With a remarkable 99 percent water removal rate, it ensures that your air supply remains dry, enhancing the efficiency of your equipment. The unit features a modular connection for easy integration, allowing you to customize your setup as needed. Its robust construction includes a 1/2" NPT inlet and outlet, supporting high operating pressures, which means you can rely on it in demanding environments. Additionally, it comes with a bracket for convenient mounting, making installation straightforward and hassle-free.
Caleffi 551007A Air Separator
The Caleffi Air Separator is designed to enhance the performance of your heating and air conditioning systems. Its stainless steel interior ensures durability and resistance to corrosion, making it a reliable choice for long-term use. With a 1.25-inch NPT female connection, installation is straightforward and compatible with various setups. This separator works by automatically removing air bubbles, which can lead to inefficiencies, by guiding them to the top for safe discharge. By keeping your systems clean and free of air pockets, you can enjoy better efficiency and improved comfort in your space.
Caleffi 551022A Air Separator
The Caleffi Air Separator is designed to enhance the efficiency of your heating and air conditioning systems. Its stainless steel interior ensures durability and resistance to corrosion, making it a reliable choice for long-term use. The sweat connection type allows for easy installation, fitting seamlessly into your existing setup. This separator automatically captures air bubbles and directs them to the top, where they can be safely released. By cleansing and purifying your systems, it helps maintain optimal performance, ultimately saving you time and reducing maintenance costs.
Prevost TF203 Compressed Air Filter
The Prevost Air Moisture Separator is a high-quality filter specifically designed for compressed air systems. It features a durable aluminum body and precision 1/2" female NPT connections, ensuring a secure fit in your air lines. With a working pressure of up to 174 PSI, this filter effectively removes water droplets and moisture, helping to extend the life of your air tools. The 25-micron filter is easy to maintain, thanks to a convenient push-button drain that allows you to remove collected moisture effortlessly. Regular drainage ensures optimal performance and reliability for years to come.
Caleffi Dismal Air Separator 551028A
The Caleffi Air Separator is designed to efficiently remove air from your compressed air systems. With its stainless steel interior, it ensures durability and resistance to corrosion, providing you with a long-lasting solution. The 1-inch sweat connections allow for easy installation, making it convenient for your setup. This air separator effectively enhances the performance of your system by reducing air-related issues, ensuring smoother operation and improved efficiency. By choosing this product, you can enjoy a more reliable and efficient air system.
Industrial Service Solutions Air/Oil Separator 3422012800
The Industrial Service Air/Oil Separator is designed to enhance your equipment's efficiency by effectively removing oils from the air before it reaches the engine. This prevents oil from contaminating the intake system, simplifying maintenance tasks for you. It's compatible with a variety of compressed air filters and systems, ensuring a perfect fit for your original equipment. Constructed with durable glass fibers, this separator maintains its shape under pressure, providing long-lasting performance and maximum filtration surface area. Plus, it comes with a manufacturer's warranty for added peace of mind.
NIBCO 1 SWT BR Air Separator
The Webstone Air Separator is designed to enhance your system's performance. It effectively minimizes noise, making your environment more pleasant. By improving overall efficiency, it helps your system operate smoothly, saving you time and energy. Additionally, it reduces wear on system components, which can extend their lifespan and lower maintenance costs. Best of all, this air separator requires no regular upkeep, allowing you to focus on more important tasks without the worry of constant maintenance.
Industrial Service Solutions R-15500 Air/Oil Separator
The Industrial Service R-15500 Separator enhances the performance of your compressed air systems by effectively filtering oils from the air before it reaches the engine. This means your equipment runs smoother and requires less maintenance. It's designed to fit various systems, ensuring compatibility and performance that meets or exceeds your original equipment. Built with high-quality materials, this separator is durable and withstands pressure, maintaining its shape and function. It helps maintain consistent pressure, preventing machine shutdowns, making it a reliable choice for demanding applications.
Frequently Asked Questions (FAQs)
1. How does a compressed air separator work?
Compressed air separators, such as oil-water separators, use coalescing or centrifugal design to remove condensate from the air compressor. In coalescing separators, the airflow moves from inside the filter element to the outside, filtering out water droplets.
2. Do I need a water separator for my air compressor?
Yes, it is necessary to have an oil-water separator for air compressors, as it is mandated by regulatory bodies like the EPA. Not having a separator can reduce machine efficiency and may result in fines.
3. What is a separator used for compressor?
A compressor separator is used to separate oil from the compressed air. The oil needs to remain inside the compressor for lubrication, while the compressed air should be free of oil.
4. What are the two types of air separators?
There are two types of air separators: tangential/centrifugal air separators and in-line air separators. Other types include air purgers/scoops, Bell & Gossett, Taco, and Webstone.
5. Where should an air separator be installed?
In a heating system, the ideal location for an air separator is at the outlet of the heat source. For chilled water systems, it should be installed in the return to the chiller.
6. What happens if you don't drain water from air compressor?
If water is not drained from the air compressor, it can lead to the degradation of the protective coating and rusting of the tank. This can compromise the integrity of the tank and may require the purchase of a new one. It is recommended to drain the tank daily to prevent water build-up.
7. Why would you install an air separator?
Installing an air separator is necessary to prevent common issues like corrosion in heating pipework systems, pump failure due to cavitation, and system noises.
8. How often should you drain water from air compressor?
It is recommended to drain the air compressor tank daily, either manually or automatically. Water build-up can cause rusting of the tank, so regular draining is essential. An electronic drain valve can be helpful for those who tend to forget about draining the tank.
During our compressed air separator research, we found 24 compressed air separator products and shortlisted 10 quality products. We collected and analyzed 2,293 customer reviews through our big data system to write the compressed air separators list. We found that most customers choose compressed air separators with an average price of $132.26.
The compressed air separators are available for purchase. We have researched hundreds of brands and picked the top brands of compressed air separators, including Webstone, Taco, PneumaticPlus, Caleffi, Prevost. The seller of top 1 product has received honest feedback from 385 consumers with an average rating of 4.7.

Brian Howie is a content writer and senior industrial designer. After graduation from Westminster College, he has been engaged in product design and manufacturing for 18 years. Brian Howie has always found great pleasure in designing industrial products and sharing his ideas and experience online.