Best Compressed Air Separators of 2026

Brian Howie Avatar
Brian Howie
Last Updated: Jan 8, 2026

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

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

Webstone NIBCO Air Separator Cover #TOP 1
Webstone NIBCO Air Separator
ftb score rating icon 9.9
Magimaker Air Oil Separator Element 250034-112 Cover #TOP 2
Magimaker Air Oil Separator Element 250034-112
ftb score rating icon 9.8
Automatic Air Separator Taco 1 in. Cover #TOP 3
Automatic Air Separator Taco 1 in.
ftb score rating icon 9.6

Top 10 Compressed Air Separators

#TOP 1

Webstone NIBCO Air Separator

C5807LT112
Brass
Webstone NIBCO Air Separator Cover
Webstone Brass Air Separator, w/Removable Vent Head & Coalescing Medium, CxC, H-74003, 3/4 in

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.

What We Like
Noise reduction
Enhanced system efficiency
Lower wear on components
No maintenance needed
#TOP 2

Magimaker Air Oil Separator Element 250034-112

250034-112 408167-009
Magimaker Air Oil Separator Element 250034-112 Cover
Magimaker 250034-112 Air Oil Separator Element Replacement Part Spin-On Type Compatible with Sullair Air Compressor 250034-143 408167-009

The Magimaker Air Oil Separator is designed to work seamlessly with Sullair air compressors, ensuring compatibility and easy replacement. This part helps separate oil from your engine's ventilation system, which means you won't have to constantly drain oil, keeping your machine running smoothly. Made from high-quality materials, this separator is built to last and perform reliably under tough conditions. Before purchasing, make sure to check your vehicle model and part number carefully to ensure a perfect fit. With these features, you can expect a durable and efficient product that helps maintain your equipment’s performance.

What We Like
Compatible with Sullair compressors
Reduces oil drainage needs
Durable high-quality materials
Ensures efficient machine operation
#TOP 3

Automatic Air Separator Taco 1 in.

49-100T
Automatic Air Separator Taco 1 in. Cover
Air Separator, 1 in.,150psi,Automatic

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.

What We Like
Efficient moisture removal
Prevents equipment damage
Reliable 150 psi operation
High-quality Dutch manufacturing
#TOP 4

Caleffi 3/4" NPT Female DISCAL Air Separator

551003A
As shown
One Size
Caleffi 3/4" NPT Female DISCAL Air Separator Cover
3/4 inch NPT Female DISCAL Air Separator

The Caleffi DISCAL Air Separator is designed to efficiently remove air from your hydronic system. It features a pinned float that prevents it from sticking due to debris or installation angles, ensuring reliable operation. The separator has a large chamber that slows down fluid flow, helping tiny air bubbles gather and combine, so they can be removed automatically. Its coalescing mesh is made from durable glass-filled nylon, which stands up better to oxygen and acidic fluids than metal alternatives. Additionally, the stainless steel float linkages keep the float aligned even during turbulent conditions, like when filling your system from the bottom, giving you consistent and trouble-free performance.

What We Like
Anti-rotation pinned float
Large chamber for bubble removal
Durable nylon coalescing mesh
Stainless steel float linkages
#TOP 5

Industrial Service Solutions Air/Oil Separator for MANN LB 11 102/2

Industrial Service Solutions Air/Oil Separator for MANN LB 11 102/2 Cover
Industrial Service Solutions Aftermarket Air/Oil Separator | Compatible with MANN Filter LB 11 102/2 | Replacement Part | Spin-On Type | for Compressed Air Equipment & Systems

The Industrial Service Solutions AOS is designed to keep your engine running smoothly by removing oil from the air before it reaches the intake system. This helps your machine work more efficiently and makes maintenance easier for you. It fits various compressed air filters and systems, ensuring compatibility with your existing equipment. Built with durable steel, nylon end-caps, and strong welds, this separator is made to last and maintain its shape under pressure. Plus, it comes with a manufacturer’s warranty, giving you confidence that you’re getting a reliable and cost-effective replacement part.

What We Like
Efficient oil removal
Wide equipment compatibility
Durable construction
Manufacturer’s warranty
#TOP 6

Industrial Service Solutions Kaeser 6.3792.0 Air/Oil Separator

Industrial Service Solutions Kaeser 6.3792.0 Air/Oil Separator Cover
Industrial Service Solutions Aftermarket Kaeser 6.3792.0 Air/Oil Separator | Replacement Part | Spin-On Type | for Compressed Air Equipment and Systems

The Industrial Service Solutions AOS is designed to keep your compressor running smoothly by efficiently removing oil from the air before it reaches the engine. This helps prevent oil buildup in the intake system, making your machine easier to maintain and more reliable. It fits a range of compressed air systems, matching or exceeding your original equipment’s performance. Built with durable steel, nylon end-caps, and strong welds, this separator holds its shape under pressure, ensuring long-lasting use. Its sturdy design also helps maintain steady pressure, preventing collapse and downtime, making it a smart and cost-effective replacement part for your equipment.

What We Like
Efficient oil removal
Wide equipment compatibility
Durable steel construction
Maintains steady pressure
Cost-effective alternative
#TOP 7

Industrial Service Solutions R-15500 Air/Oil Separator

Industrial Service Solutions R-15500 Air/Oil Separator Cover
Industrial Service Solutions Aftermarket Bauer/Rotorcomp R-15500 Air/Oil Separator | Replacement Part | Spin-On Type | for Compressed Air Equipment and Systems

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.

What We Like
Improved oil filtration
Compatible with various systems
Durable construction
Consistent pressure maintenance
#TOP 8

Compass-Yang Air Oil Separator for Atlas Copco GA Series

2202-9294-00
Compass-Yang Air Oil Separator for Atlas Copco GA Series Cover
Compass-Yang Air Oil Separator 2202929400 for Atlas Copco Air Compressor GA11FF GA11VSD GA7 GA7VSD GA15VSD,Replace# 2202929450 1630404600

The Compass-Yang Oil Separator is designed specifically for Atlas Copco air compressors like the GA11FF and GA15VSD models. This part ensures reliable separation of oil from compressed air, helping your compressor run smoothly and efficiently. You benefit from its high reliability and stable performance, which means fewer breakdowns and longer equipment life. Built to meet original equipment manufacturer (OEM) standards, it guarantees quality and compatibility. Additionally, each unit undergoes strict factory testing, so you can trust it to perform well right out of the box. This separator is a smart choice for maintaining your compressor’s optimal operation.

What We Like
High reliability
Stable performance
OEM standard quality
Factory-tested
#TOP 9

PneumaticPlus SAMG Series Air Dryer

SAMG350-N04BD-MEP
Gray
1/2" NPT
PneumaticPlus SAMG Series Air Dryer Cover
PneumaticPlus SAMG350-N04BD-MEP Air Drying Unit 1/2" NPT Water Separator, Metal Bowl Pipetype Sight Glass with N.C. internal Auto Drain, 52 SCFM, Bracket

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.

What We Like
High water removal efficiency
Modular connection capability
Supports high operating pressures
Easy installation with bracket
#TOP 10

Caleffi 551022A Air Separator

551022A
Caleffi 551022A Air Separator Cover
Caleffi 551022A 3/40-Inch 150 PSI Compact Brass Sweat 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.

What We Like
Durable stainless steel construction
Easy installation
Automatic air bubble removal
Improves system efficiency
Buying Guide Image

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.

Editor's Notes

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 $148.34.

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, Magimaker, Taco, Caleffi, Industrial Service Solutions. The seller of top 1 product has received honest feedback from 384 consumers with an average rating of 4.7.

Written by
Brian Howie Avatar

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.