[2024 Updated] The Best Air Compressor Automatic Drain Valves

Air Compressor Automatic Drain Valves

Automatic Drain valve are very helpful for air compressors and makes your task easy for you by automatically draining the moisture from your air compressors. But finding the right automatic drain valve can be difficult.

So, if you are looking for the best automatic drain valve for your air compressor then here we have reviewed them with each of their features.

Table of Contents

If you are in a hurry here is a quick list of it.

Best Air Compressor Automatic Drain Valve 2023




Electronic Automatic Tank Drain By Suburban

Inlet/Outlet Size: 1/4″ 

Ingersoll Rand Electronic Drain Valve

Inlet/Outlet Size: 1/4″ 

Zijia AC 110V Automatic Drain Valve

Inlet/Outlet Size: 1/2″ 

Automatic Air Compressor Tank Drain System By StopWoofer

Inlet/Outlet Size: 1/4″

Automatic Electronic Timed Water Moisture Drain Valve by Made in China

Inlet/Outlet Size: 1/2″ 

Here are detailed reviews of each air compressor drain valve with their specs.

1. Electronic 1/4″ Automatic Tank Drain By Suburban:

The first Automatic Tank Drain on our list is by Suburban.

It is one of the top rated and best air compressor automatic drain valve in 2022.

This unit features a maximum pressure of 250 PSI and weighs only 1.6 pounds which makes it quite lightweight and It comes with a 1/4″ NPT female and 1/4″ inlet/outlet fitting.

It utilizes AC power source and requires 110 volts.

This unit is constructed from brass which makes it quite durable, it can effectively withstand high temperatures, and the great thing about it that it is highly resistant to corrosion which greatly increases its lifespan (but it requires a good deal of maintenance since it is prone to a blackish tarnish).

It is very easy to install as it mounts directly off the bottom of the receiver tank and you can easily replace the worn-out or the non-working valves.

Feature list:

  • Dimensions: 4 x 6 x 4 inches
  • Weight: 1.6 Pounds
  • Maximum Pressure: 250 PSI
  • 1/4″ Inlet and Outlet
  • Material: Brass
  • Power Source: AC
  • Voltage: 110 volts


  • Easy To Install
  • Well Built
  • Max 250 PSI
  • Lightweight


  • No Mounting Tab

2. Ingersoll Rand 1/4″ Electronic Drain Valve:

This Electronic Drain Valve by Ingersoll Rand protects your air compressor from the moisture which builds up inside the tank and also from the formation of rust in your tank and pipes.

It is quite lightweight as it weighs only 2.3 pounds. It has a very easy to adjust the electronic timer and the OEM electronic drain valve automatically closes and opens based upon the timer settings.

This Drain Valve comes with a blowdown valve, manual electric drain and a strainer/ball valve which stops the debris from clogging the drain valve.

This automatic electronic solenoid drain valve can effectively condensate from the receivers, aftercoolers, drip legs, filters, dryers, compressors, and receivers. 

Feature list:

  • Dimensions: 7.7 x 4.7 x 4.9 Inches
  • Weight: 2.3 Pounds
  • Material: Metal
  • Voltage: 110 volts
  • Wattage: 10 watts
  • Measurement System: Metric


  • Easy to install
  • Lightweight


  • Expensive

3. Zijia 1/2″ Automatic Drain Valve:

The Zijia 1/2″ Automatic Drain Valve is quite durable as its valve is made from forging brass and has flame retardant ABS plastic.

It features maximum working pressure of 1.6 Mpa with a flow aperture of 5 mm and has a two-way direct-acting valve.

Its power supply voltage is 110V-120V AC. This unit is equipped with a split with a drain valve and a ball valve filter and its current consumption is about max 4mA.

It has IP65 protection grade (which is rated as dust-tight and protects against the water projected from a nozzle).

The maximum temperature of this unit is 90 °C which is very high and the length of the power cable is 1.8m and In/Out port size is 1/2″.

Overall, this is also a great automatic drain valve for your air compressor. 

Feature list:

  • Dimensions: 6 x 6 x 1.9 Inches
  • Weight: 1.5 Pounds
  • Maximum Working Pressure: 1.6 Mpa
  • In/Out Port Size: 1/2″
  • Power Supply Voltage: AC 110V-120V/50Hz
  • Time Interval (OFF): 0.5–45 minutes (adjustable)
  • Discharge Time (ON): 0.5–10 seconds (adjustable)
  • Manual Test Button: Yes 
  • Current Consumption: Max 4mA
  • Protection Grade: IP65
  • Type: Two Way Direct Acting Valve
  • Power Cable: 1.8m Length
  • Material: Flame Retardant ABS Plastic 
  • Valve Material: Forging Brass


  • IP65 Rated
  • Easy To Install
  • Lightweight


  • Max Time Interval Is 45 Minutes
  • Some Of The Users Reports Of Getting A Defective Unit

4. Automatic Air Compressor 1/4″ Tank Drain System By StopWoofer:

This Automatic Tank Drain By StopWoofer can easily help you to eliminate the water and debris inside your air tank.

It features a digital controlled timer for intervals and for the automatic discharge times.

The inlet and outlet size of the Valve is 1/4″.

To control the solenoid valve it features a 110/220 volt control system which converts to 12vdc and can be set up to 1-99 hrs to release any moisture or water inside your air tank.

Feature list:

  • Inlet/Outlet Size: 1/4″
  • Voltage Power: 110/220 volts
  • Material: Aluminum
  • Digital Controlled Timer
  • Valve Material: Brass


  • Well Built
  • Quiet 


  • Expensive

5. Automatic Electronic Timed Water Moisture 1/2″ Drain Valve by Made in China:

This Automatic Drain Valve features a maximum pressure of 200 PSI and it can be plugged into a regular 115-volt outlet and the cord length of it is 6.5′ long.

It is quite durable as it has a Brass Body Construction which is quite corrosive resistant and can withstands high temperatures (but it requires a good deal of maintenance since it is prone to a blackish tarnish).

It has a test button to drain it manually anytime.

This automatic drain can be set to drain every 30 seconds up to every 45 minutes and the valve will stay open for 5 seconds up to 10 seconds and the air outlet is 1/2″ female npt and the valve has 1/2″ male npt air inlet which measures about 3/4″ in diameter.

This unit has a built-in strainer which protects the valve from the debris and it can also be cleaned if it gets clogged. 

Feature list:

  • Dimensions: 6.7 x 4.4 x 3.3 Inches
  • Weight: 1.7 Pounds
  • Max Pressure: 200 PSI
  • Internal Time: 0.5 to 45 min
  • Discharge Time: 0.5 to 10 sec
  • Operating Temperature: 32 Degrees Fahrenheit / 130 Degrees Fahrenheit
  • Material: Brass
  • Standard Voltages: 220/240V, 50Hz 115V, 60Hz


  • Lightweight
  • Brass Body Construction


  • Max Time Interval Is 45 Minutes

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