5 Best Water Separator For Air Compressor

When you’re thinking of ensuring clean and dry compressed air, a reliable water separator is essential for your air compressor system. It is also known as a moisture trap or filter that helps remove moisture, oil, and other contaminants from the compressed air. 

Also, it prevents potential damage to pneumatic equipment and improves overall system performance. With a wide range of options, it’s important to explore various brands that best suit your needs. 

But don’t worry, as I unveil a lineup of top-notch moisture separators for air compressors that will effectively remove water vapor from your compressed air. In this guide, I will explore the best water separators for air compressors according to their efficiency, durability, ease of maintenance, and more. So, let’s start!

Best Water Separator For Air Compressors Reviews

best rated water separator for air compressor

Here I have listed the 5 best water separators for you so that you may have them and decide the best suit from here. So let’s check their features!

TOP-PICK

1. NANPU 3/8″ NPT Compressed Air Filter 

  • This combo unit combines a filter, regulator, and lubricator in a single package, streamlines your compressed air system, and saves space.
  • The integrated filter traps water and oil particles, ensuring moisture-free compressed air.
  • The regulator component allows for precise air pressure control and enables you to adjust the desired pressure range.
  • With the lubricator feature, you can have a fine oil mist in the compressed air stream.
  • The included pressure gauge displays pressure readings from 0 to 150 psi.
  • It removes accumulated water and debris from the system and helps to prevent clogs.

The NANPU 3/8″ NPT Compressed Air Filter is a 3-in-1 unit that combines a filter, regulator, and lubricator into a single package. This unit is designed to improve compressed air quality by removing water, oil, and other impurities. Besides, it regulates the air pressure and provides lubrication to extend the life of pneumatic tools and equipment.

Specifications

  • Brand: NANPU
  • Dimensions: 10.2 x 5.7 x 3.5 inches
  • Weight: 2.15 Pounds
  • Port Size: 3/8″ NPT
  • Air Flow: 60 SCFM
  • Temperature Range: 41-140 °F
  • Max Inlet Pressure: 145 psi
  • Drain: Semi-Auto

The NANPU 3/8″ NPT Compressed Air Filter Regulator Lubricator Combo Water/Oil Trap Separator is convenient and practical. The 3-in-1 design allows for easy installation or saves space. The combination of filter, regulator, and lubricator functions improves compressed air quality. The gauge allows easy air pressure monitoring, while the semi-automatic drain makes maintenance easier. 

Moreover, this unit can help to improve the efficiency and reliability of compressed air systems. It comes with a mounting bracket for convenient installation and is designed for easy maintenance. Also, it allows you to replace filters and perform necessary upkeep efficiently. It is one of the best water separator for air compressor for painting.

  • Its 3-in-1 design provides a compact and efficient solution that saves space in your compressed air system. The efficient filtration capability effectively traps water and oil particles. Also, it ensures clean and moisture-free compressed air for protection. The precise pressure regulation feature allows accurate control and maintenance of the desired pressure. 
  • Additionally, the lubricator function ensures proper pneumatic tools and equipment lubrication and promotes smooth operation and extended lifespan. The unit also includes a gauge to monitor pressure readings, a semi-automatic drain for efficient water and debris removal, and durable construction with a poly bowl for corrosion resistance.

  • While the NANPU combo unit offers numerous advantages, there are a few considerations. Firstly, the ⅜ NPT size may not be compatible with all compressed air systems. So it’s essential to ensure compatibility before purchasing.

RUNNERS-UP

2. THB Heavy Duty Compressed Air Filter 

  • This inline particulate filter is designed to handle high flow rates.
  • It allows for smooth and uninterrupted airflow, minimizing pressure drops.
  • The filter has a durable metal bowl that provides excellent protection and durability. 
  • It enables efficient air filtration without causing significant flow restrictions.
  • The 5-micron filter element effectively captures and removes particulate matter, such as dust, dirt, and debris, from the compressed air stream.

The Heavy Duty High Flow Filter is an essential tool for anyone who works with compressed air systems. This high-quality filter removes particulate matter and other impurities from compressed air. Also, it ensures that pneumatic tools and equipment operate efficiently and reliably. Besides, it works as an automatic water separator for air compressor.

Specifications

  • Brand: THB
  • Dimensions: ‎8.8 x 4 x 3 inches
  • Weight: 1.6 pounds
  • Air Flow Capacity: 140 Cubic Feet Per Minute
  • Material: Aluminum
  • Capacity: 140 Cubic Feet
  • Maximum Power: 0.2 Horsepower
  • Included Components: filter
  • Uses For Product: Drilling, Spraying, Air Brushing, Nailing

This inline water separator for air compressor includes 3/4″ NPT ports, a flow rate of up to 140 CFM, a visible sight glass that allows for easy monitoring of filter status, and a 5-micron filter element that effectively removes particulate matter. These features provide clean and reliable compressed air for various pneumatic tools and equipment. 

With its durable construction, large metal bowl, and high flow rate, this filter is well-suited for various industrial and commercial applications. Despite potential drawbacks, the Heavy Duty High Flow Compressed Air Filter is generally well-regarded for its effectiveness, reliability, and durability. 

  • One of the primary benefits of the Heavy Duty Filter is its high flow rate. It allows for a steady supply of clean compressed air even in demanding industrial applications. The large metal bowl and visible sight glass make monitoring and maintaining the filter easily.
  • The 5-micron filter element effectively removes particulate matter. Additionally, the durable construction of this filter ensures the rigors of heavy use in industrial and commercial settings.

  • You may need help with the sight glass becoming cloudy or difficult to see, making it harder to monitor the filter status. Besides, the 3/4″ NPT ports may not be compatible with all compressed air systems.

PREMIUM-UP

3. Edge Industrial 3 Stage Industrial Grade Filter Regulator

  • Three stages of filtration come with maximum performance.
  • Industrial-grade construction provides you with durability and longevity.
  • Metal bowls increase strength and resistance to damage
  • The manual drain for easy maintenance
  • It is suitable for use with a wide range of compressed air tools and equipment
  • Effective removal of moisture, oil, and dirt from compressed air lines

The Edge Industrial is a high-quality system. It is designed to remove moisture, oil, and dirt from compressed air lines. Besides, it ensures that your equipment operates at optimal efficiency. Also, it is suitable for use in various industries, including automotive, woodworking, and manufacturing.

Specifications

  • Brand: Edge Industrial
  • Weight: ‎6 pounds
  • Dimensions: ‎11.1 x 9.61 x 4.09 inches
  • Material: Aluminum
  • Style: 3/4″ NPT, MANUAL DRAIN
  • Air Flow Capacity: 100 Cubic Feet Per Minute

One of the most notable features of this system is its three-stage filtration process, which ensures that compressed air is free from dirt, oil, and moisture. The first filtration stage removes larger particles, while the second removes finer particles and oil mist. The third stage uses a desiccant dryer to remove any remaining moisture from the compressed air. 

It can cause damage to equipment and affect performance. The Filter Regulator system is designed to provide optimal performance and efficiency. This system has several key features that make it a reliable choice for industrial applications. It is one of the best air compressor water separator auto drain.

  • This system ensures optimal performance of compressed air tools and equipment. It can help to reduce downtime and maintenance costs. The manual drain feature also makes maintenance and cleaning easy, saving time and effort.

  • The Filter Regulator may be more time-consuming than some automated systems. Additionally, the system may be more expensive than other options on the market.

CUSTOMER-CHOICE

4. Campbell Hausfeld Air Cleaner

  • This air cleaner effectively removes moisture from the compressed air.
  •  It helps to eliminate potential issues like corrosion and decreased performance.
  • Equipped with a large filter, this unit has a high filtration capacity that removes dirt, oil, and other contaminants from the compressed air stream. 
  • The compact and portable design of the air cleaner makes it easy to move and position wherever needed.
  • This PA208503AV is designed to be compatible with a wide range of air tools and compressors. 
  • It visually indicates any accumulated moisture, enabling timely maintenance and ensuring continuous air supply quality.

This air cleaner is designed to provide high-quality compressed air for air tools by removing moisture and debris. It suits various industries, including automotive, woodworking, and construction.

Specifications

  • Manufacturer: Campbell Hausfeld
  • Item Weight: 8 ounces
  • Product Dimensions: ‎7.3 x 3.9 x 12.1 inches
  • Style: Air Cleaner/Air Dryer
  • Material: Metal
  • Power Source: ‎Air Powered

The Campbell Hausfeld Air Cleaner provides high-quality compressed air for air tools. Its efficient moisture removal prevents damage to air tools by removing moisture and debris from the compressed air. This two-stage filtration system ensures optimal performance. And the easy-to-read pressure gauge allows for easy monitoring of air pressure.

The compact design of the Campbell Hausfeld Air Cleaner makes it an ideal solution for those who have limited workspace. The system is also wall-mountable, allowing convenient placement in any workspace. This air cleaner is also suitable for use with a wide range of air tools.

  • The Campbell Hausfeld PA208503AV offers a range of advantages to enhance your air tool experience. Its efficient moisture removal capability ensures that compressed air remains dry. It prevents water vapor from damaging air tools and equipment. 
  • Portability is another notable advantage of the PA208503AV. Its compact and portable design allows for easy relocation and installation in various workspaces. This unit offers flexibility and convenience, whether mounted on a wall or placed on a workbench.

  • The system may not be as durable as other options on the market, which could be a consideration for those requiring a more heavy-duty solution. 

BUDGET-FRIENDLY

5. DeVilbiss 130525 QC3 Air Filter and Dryer

  • This air cleaner effectively removes moisture from the compressed air.
  •  It helps to eliminate potential issues like corrosion and decreased performance.
  • Equipped with a large filter, this unit has a high filtration capacity that removes dirt, oil, and other contaminants from the compressed air stream. 
  • The compact and portable design of the air cleaner makes it easy to move and position wherever needed.
  • This PA208503AV is designed to be compatible with a wide range of air tools and compressors. 
  • It visually indicates any accumulated moisture, enabling timely maintenance and ensuring continuous air supply quality.

The DeVilbiss 130525 QC3 is a high-quality compressed air filtration system that provides clean and dry air for various applications. It includes paint spraying, sandblasting, and airbrushing. This system is easy to install and use, making it an ideal choice for DIY enthusiasts and professionals in different industries.

Specifications

  • Brand: DeVilbiss
  • Fit Type: Universal Fit
  • Weight: 1.4 pounds
  • Dimensions: 4.7 x 8.5 x 13 inches
  • Country of Origin: Taiwan

Key Features

  • A high-quality filtration system helps you to remove moisture, oil, and debris from compressed air
  • The Compact design provides you with space-saving installation
  • With a Quick-change filter element, this air filter ensures easy maintenance.
  • Besides, it comes with sight glass to easily monitor moisture levels.
  • Auto drain valve provides you with convenient operation.

The DeVilbiss 130525 QC3 Air Filter is also easy to install and use. And this feature makes it suitable for DIY enthusiasts and professionals in the automotive and woodworking industries. Another essential feature of the air compressor water separator 1/2 inch is its quick-change filter element. 

It allows you easy maintenance. The sight glass also makes it easy to monitor moisture levels, while the auto drain valve allows for convenient operation. These features make the system easy to use and maintain, even for those new to compressed air filtration. Overall, the DeVilbiss 130525 QC3 is a reliable and efficient solution for compact air filtration. 

  • First and foremost, it effectively removes moisture and contaminants from compressed air, ensuring a clean and dry air supply for your pneumatic tools. It helps you to prevent damage, corrosion, and clogging. Besides, it leads to improved tool performance and longevity.
  • The unit’s compact and lightweight design makes it easy to install. Also, it allows you the flexibility in various work environments. The transparent sight glass enables quick and convenient monitoring of the filtration process. The QC3 Air Filter and Dryer also boast a high flow capacity. It allows you efficient and uninterrupted airflow, even during high-demand applications.

  • It may not be suitable for larger applications. Some users have reported that the auto drain valve may require additional maintenance to prevent clogging.

Best Water Separator For Air Compressor- A Buying Guide

When looking for the best water separator for an air compressor, consider the following factors:

  • Water Separation Efficiency

Always look for a high water separation efficiency separator capable of effectively removing moisture from the compressed air. It ensures better protection for your equipment and prevents potential damage.

  • Flow Capacity

Consider the flow capacity of the water separator, ensuring it matches or exceeds the airflow requirements of your air compressor system. It provides proper performance without causing restrictions or pressure drops.

  • Drainage Mechanism

Check the drainage mechanism of the water separator. Choose options with automatic or manual drain valves that are easy to operate and maintain. Automatic drains can be convenient for continuous operation, while manual gutters control draining.

  • Filtration Media

Consider the type and quality of filtration media used in the water separator. Try to look for separators with effective filtration capabilities to remove contaminants like oil, particles, and moisture.

  • Size and Installation

Ensure the water separator is compatible with the size and configuration of your air compressor system. Consider the available space for installation and choose a separator that fits conveniently into your setup.

  • Durability and Build Quality

Opt for a water separator made from durable materials that can withstand the conditions of your operating environment. High-quality construction ensures long-lasting performance.

  • Brand and Reviews

Consider reputable brands known for producing reliable air compressor accessories. Read customer reviews and ratings to get insights into the performance and satisfaction of other users.

  • Budget

Set a budget based on your requirements and compare options within that range. Balance the price with the features and quality offered by the water separator.

By considering these factors, you can make an informed decision and find the best water separator for your air compressor that provides efficient moisture removal.

Frequently Asked Questions (FAQs)

Do I need a filter on my air compressor?

Yes, using a filter on your air compressor is recommended. It helps remove contaminants such as oil, dirt, and moisture from the compressed air. It ensures cleaner and more efficient equipment operation and prevents potential damage.

Where do I put the water separator on an air compressor?

The water separator should be installed downstream of the air compressor before additional air treatment components. Typically, it is placed near the outlet or discharge point of the compressor. It allows it to effectively remove moisture from the compressed air before it enters your pneumatic tools or system.

Does my air compressor need a water separator?

Yes, using a water separator with your air compressor is highly recommended. It helps remove moisture from the compressed air, preventing damage to your pneumatic equipment, improving the quality of your compressed air, and enhancing the overall efficiency and longevity of your air compressor system.

How often should I change the water separator for an air compressor?

The frequency of changing the water separator for an air compressor depends on various factors such as usage, operating conditions, and the type of separator. Inspecting and draining the separator regularly and replacing it if it becomes damaged or fails to remove moisture from the compressed air effectively is generally recommended.

Do I need a water separator for my air compressor?

Using a water separator with your air compressor is highly recommended. It helps remove moisture from the compressed air, preventing damage to your pneumatic equipment, improving the quality of your compressed air, and enhancing the overall efficiency and longevity of your air compressor system.

How do I stop water from coming into my air compressor?

To prevent water from entering your air compressor, you can take several steps:

Install a water separator or moisture trap near the outlet of your compressor.

Ensure proper drainage of condensate from the compressor tank.

Implement regular maintenance and inspection of your compressor’s filtration system.

Consider using an air dryer or compressed air treatment system to reduce moisture content further.

How often should you drain water from a compressor?

The frequency of draining water from a compressor depends on factors like humidity levels and usage. As a general guideline, draining the compressor tank daily or whenever the accumulated water reaches a detectable level is recommended. Regular inspection and maintenance will help determine the appropriate drainage frequency for your specific setup.

Final Words

When selecting the best water separator for your air compressor, you should prioritize efficient moisture removal, durability, ease of maintenance, and more. While numerous options are available, NANPU 3/8″ NPT Compressed Air Filter is a top choice. 

Its advanced filtration technology and user-friendly features offer reliable protection against moisture-related issues. Investing in a high-quality water separator can safeguard your compressor and enjoy the benefits of clean and dry compressed air.

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Samuel H. Murphy is DIY expert and Interior Designer. He is also a part time content writer of Capische. He lives in Warren city, Michigan. He test tools like drill, saw, sander, air compressor etc and helps readers to find out the best tools.

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