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How to Fill HPA Tank with Air Compressor? [Quick Steps]

Many of you use an HPA tank in your day to day life in different applications, and the HPA tank is a high pressure tank in which air is present in a highly compressed form for using it in several things.

If you have an HPA tank then refilling it is one of your important concerns, you probably hate going to some shop for a refill again and again, and if it is like that. Then you will be happy to know that now you can get an air compressor to fill your HPA tank at an affordable price in the market. It depends on you whether you want to purchase an air compressor or you can also rent it for some time from someone else.

How To Fill A High Pressure Air Tank With An Air Compressor Easily?

I know that now a question will pop up in your mind: how will you fill the HPA tank even if you have a compressor and is it safe to do this by yourself?

We would like to tell you that it is very easy to fill the tank with an air compressor. You will just need to follow some steps which we will tell you shortly in this article, and also this process is safe if you will take all the precautions while doing this task and checking everything perfectly.

So now without any delay let’s go deep into the steps you have to perform to fill the HPA tank. 


Things you will need to perform this task:

  1. Air compressor
  2. Nozzle
  3. Hose
  4. Safety equipments

What You Should do Before Refilling the High-Pressure Air Tank?

Check for Any Remaining Gas in the Tank

Before moving on to the refill process first check if there is any air left in the tank, release the air present in the tank in a safe place away from your house, as it is kind of poisonous and if you or someone else by mistake inhale it then it can also cause respiratory or other problems also, you need to be very careful while doing this and find a place where the air can not affect anything.

This process does not seem to be very important in refilling but it is.

Check for Any Leakage in the Tank

A leak in the tank can even cause an accident, so before moving towards refilling the high pressure air tank. Check if there is any leakage in the tank otherwise it will not even fill properly and also affect the working of the tank.

After checking these two things now you are ready to go for the refilling part, please follow the below procedure to continue.

But before starting, put on your safety equipment.

Step 1:

There is a nozzle on both the high-pressure air tank and the air compressor for the connections,

Connect the nozzle of these two appliances with a hose, check if the connection is perfect or not. If these two things will not connect properly then there is a chance of leaking gas which is dangerous.

Step 2: 

Now pull the safety valve present on the air compressor to your side, and notice the sound of releasing air, this ensures that it is working properly.

Now plug in the electrical wires and turn on the power to supply energy to your air compressor for working.

Ensure that you are plugging in the power cable correctly to avoid any issue.

Step 3:

After supplying power to your air compressor, it will start compressing air, and as you have connected the air compressor to the high-pressure air tank it will pass the compressed air to the tank. Now wait for some time to fill the tank, it will take some minutes.

Maintaining PSI

Now an important task while filling the tank is to maintain the pressure for the air and we measure pressure in terms of PSI(pound per square inch), if the PSI of the air compressor is not suitable for the tank then the tank will not fill. So for this, you have to check the PSI while filling the tank.

Step 1:

You will know whether the high air pressure tank is up to the mark by checking its PSI, the PSI will tell if you need to fill more air through the compressor or not.

Step 2:

After ensuring that the tank is full, now the last step is to disconnect the air compressor from the tank by removing the nozzle from it and also turn off the power supply by disconnecting the electrical wirings to turn off the compressor.


If you are not technical enough to do this and or you think that something is wrong with any component of the system, then do not take any risk by doing this job yourself because as we all know precaution is better than cure, in such conditions contact an expert in this field and seek their help.

Frequently Asked Questions

What If I do not want to purchase an air compressor, from where should I fill my tank?

If you do not want to purchase an air compressor and want to refill your paintball tank then do not worry you have other options too, you can go to any paintball store for a refill, they will do it for $5 approx, it can also vary sometimes from shop to shop, but if you invest in an air compressor then it will be a one-time investment.

How long does a high-pressure air tank last?

You need to perform a hydro test every 3-5 years after the manufacturing date that you can see on the body of the tank. If your tank will pass the hydro test then the testing facility will stamp a new date on the tank which will act as the new checkpoint of your tank, then again after the date that has written on the tank you have to hydro test the tank after 3 to 5 years.
Your tank will run as long as it will pass the hydro test and once it fails the test you can not use it longer.

How to measure the PSI of an air compressor?

If you have an air compressor then it is very essential to know how to measure PSI from the pressure gauge on it to make it work properly and to avoid malfunctioning. So you have to know how to read a pressure gauge, first of all, your air compressor has two pressure gauge present in it, one is on the left side and one is on the right side, the pressure gauge at the left side shows you the initial pressure of the tank and the right side one shows the pressure that is generating on filling the compressed air.
With the help of these two pressure gauges, you can easily know about the pressure of the compressed air.

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