[2024 Updated] 5 Best Water Separator For Air Compressor

Water Separator For Air Compressor
best water separator & filter for your air compressor

Water Separators and Filters are very helpful when using Air compressor that helps with dirt and moisture so it’s a smart decision to use these with air compressor to prolong it’s life span and ensure it’s protection.

So, Here we have reviewed the 5 best water separators (filters) for your air compressor.

Here is a quick list if you are in a hurry!!

Table of Contents

Best Water Separators For Air Compressor 2024




PneumaticPlus Three Stage Air Drying System

1/2″ NPT

SMC Water Separator

1/2″ NPT

THB Heavy Duty Water Separator

3/4″ NPT, 5oz

THB Particulate Filter Water Trap Separator

1/2″ NPT

EDGE Industrial LINE Desiccant AIR Dryer

3/8″ NPT

Here is a detailed review of all the Best Water Separators & Filters for Air compressors.

1. PneumaticPlus SAU430-N04DG-MEP 1/2″ NPT Three Stage Air Drying System:

The PneumaticPlus is on our top of the list as it is one of the best filter for air compressor.

It has a max supply pressure of 250 PSI and operating pressure of 0-150 PSI.

This air filter is constructed from Die-Cast Aluminum which ensures protection and a long life span.

It weighs about 4.08 pounds. It features a pressure regulator and two air filters.

The SAF is a 10 Micron Particulate filter and SAFM is a 0.1-micron filter.

The SAF Air Filter is used to remove harmful moisture and debris from your air and the SAFM Coalescing Filter for removing the oil vapor or mist up to 0.1 microns.

After the air is clean it enters into the regulator where you get the desired pressure for your need.

Because of its modular design, it is very easy to connect or disconnect with your air compressor. 

Feature list:

  • Weight: 4.08 Pounds
  • Dimensions: 9.6 x 9.3 x 4.3 Inches
  • Port Size: 1/2″ NPT
  • Max Supply Pressure: 250 PSI
  • Operating Pressure: 0-150 PSI
  • Flow Rate: 37 SCFM @ 90 PSI
  • SAF: 10 Micron Particulate Element
  • SAFM: 0.1 Micron Coalescing Element
  • Material: Die-Cast Aluminum
  • Power Source: Air Powered


  • Easy To Use
  • Lightweight 
  • Die-Cast Aluminum Construction


  • Quite Expensive

2. SMC AMG350C-N04BC 1/2″ NPT Water Separator:

This SMC AMG350C-N04BC model is second on our list as it is one of the top-rated water separator for your air compressor and is very suitable to be used in compressed air applications i.e assembly line or machine shop.

It is constructed from Aluminum which makes it quite durable and easily removes water vapors from the airflow.

It features a 1/2″ (NPT) female inlet, a mounting bracket and outlet ports that can be used with existing air piping and has an airflow rate of 1,500 L/min.

Furthermore, it’s normally closed (NC) automatic drain which allows accumulated liquid to drain from the bowl.

If you just want a water separator for your air compressor then this is a great choice for you. 

Feature list:

  • Weight: 2.6 Pounds
  • Gauge: No Gauge
  • Maximum Flow Rate:1,500 L/min
  • Maximum Pressure: 217 PSI
  • Maximum Working Pressure: 145 PSI
  • Minimum Working Pressure: 21.75 PSI
  • Mounting Type: Bracket
  • Flushing System: N.C. Auto Drain
  • Size: 1/2″ NPT
  • Material: Aluminum
  • Upper Temperature Rating:140°F
  • Lower Temperature Rating: 41°F


  • Lightweight
  • Well Built Quality
  • Great Water Removal


  • Not Air Filter
  • Expensive

3. THB 3/4″ Heavy Duty Water Separator:

This Heavy Duty Water 3/4″ air filter by THB can easily remove debris and water from your air compressor, which increases the lifespan of your tools and other accessories.

It weighs 1.6 pounds which makes it quite lightweight.

This filter has a Max Output pressure of 175 PSI and a Max Input pressure of 175 PSI and a Flow Rate of about 140 CFM.

5 Best Water Separators & Filters For Air Compressor 2022 3

With the Wall Mounting Bracket and Sight Glass on the Metal bowl you can easily view your moisture level through its glass.

Furthermore, with Auto Drain System it will automatically drain the debris and moisture from the metal bowl and Its compressed air filters protect your compressor from dust, dirt, oil and water vapors.

Feature list:

  • Weight: 1.6 Pounds
  • Dimensions: 9 x 3.6 x 3.1 Inches
  • Max Output Pressure: 175 PSI
  • Max Input Pressure: 175 PSI
  • 140 CFM Flow Rate
  • Size: 3/4″ NPT, 5oz
  • Material: Aluminum Bowl


  • Lightweight
  • Auto Drain System


  • None

4. THB 1/2″ Particulate Filter Water Trap Separator:

This TBH unit has a max output pressure of about 145 PSI and max input pressure of 175 PSI and has a flow rate of 106 CFM.

It is very lightweight as it weighs only 1 pound.

It features a 5oz polycarbonate bowl with a metal bowl guard and its Su micron filter removes debris and moisture.

And it comes with a semi-automatic drain which acts as an overnight drain.

So when the pressure is applied to its bowl the drain will hold the moisture contents except you manually discharge it.

When there is no pressure applied to its bowl its drain will automatically open to release the moisture.

This is a budget-friendly filter for single-stage air compressors. 

Feature list:

  • Weight: 1 Pound
  • Dimensions: 7.4 x 3.4 x 3.2 Inches
  • Max Input Pressure: 175 PSI
  • Max Output Pressure: 145 PSI
  • Air Flow Capacity: 106 CFM
  • Size:1/2″ NPT
  • Material: Metal And Polymer


  • Good Quality
  • Lightweight
  • Semi-Automatic Drain


  • Some User Reports Leakage 

5. EDGE Industrial 3/8″ In LINE Desiccant AIR Dryer:

The Edge 3/8″ In-Line Desiccant Dryer filter is also a great choice for you as it eliminates the moisture and condensate from your compressed airlines.

Which in result increases the life of your equipment and pneumatic tools.

It has a maximum air pressure of 150 PSI and it comes with 2 bags of desiccant beads.

The beads change their color to pink when they are ready to change.

Furthermore, this filter features a Poly-carbonate bowl which makes it easy to see the beaded moisture and aluminum quick release bowl guard and it consists of a 3/8 inch NPT female inlet and outlet.

5 Best Water Separators & Filters For Air Compressor 2022 5

Feature list:

  • Weight: 1.85 Pounds
  • Dimensions: 7.2 x 3.4 x 3.1 Inches
  • Max Pressure: 150 PSI
  • Size:3/8″ NPT
  • 5oz Polycarbonate Bowl
  • Material: Aluminum


  • Lightweight
  • Great Built Quality
  • Great For Painting Small Projects.


  • Mounting Bracket May Not Be Included
  • Only Removes Moisture


In the Above list, We have covered the top water separator and filters for your air compressor.

So When buying an air filter be sure to check which is best for your budget or which type of air compressor do you own.

For me, the Pneumatic Plus 1/2″ filter is the best as it has a three-stage air drying system which is quite amazing but if you only want a water separator then SMC 1/2″ AMG350C-N04BC is a great choice.

We hope that this guide will help you to easily choose the best filters for your air compressors.

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