The effectiveness of an air compressor is determined by its PSI (Pounds Per Square Inch) rating. And this measures the pressure at which air level is delivered from the compressor. If your air compressor is not providing enough PSI, it can limit the effectiveness of air tools and obstruct projects’ progress. 

So how to increase the PSI on the air compressor? Fortunately, there are several ways to improve the PSI on your air compressor. From simple adjustments to more advanced modifications. 

I will provide a complete guide to increasing the PSI on your air compressor, enabling you to get the most out of your pneumatic tools and equipment. Let’s dive in and learn the process for optimal and more convenient performance of an air compressor.

Step 1: Remove Screws

To get started, locate the plastic pressure limiter switch cover on top of the compressor. With a screwdriver, carefully remove the screws from the vented lid. Depending on the compressor model, there will either be a single screw in the middle or four screws, one in each corner. 

Then store the screws in a bowl to avoid losing them. Remove the plastic cover and keep it safe with the screws. Be cautious while lifting the lid to prevent any harm if it appears stuck in any part.

Step 2: Twist The Screws

After uncovering the limiter switch, you’ll come across two switch screws specifically for limiting. And look closely; you will discover one screw regulates the upper limit while the other controls the lower limit. The identifying feature of the upper limiter screw is a protruding brass spring that serves as an indicator.

To raise the pressure limit, hold the screw and clockwise turn it.

Step 3: Fine-tune Screws

Start the compressor and observe its response as you gradually increase the pressure limit. Continuously adjust the screw until the pressure reaches your intended level. To maintain the high pressure, use the lower limiter switch positioned near the upper limiter screw. 

After that, turn the lower limiter screw in a clockwise direction to prevent the pressure from dropping too low. Due to the rapid decrease in force, it is essential to make precise adjustments to the two screws. To keep the required pressure level for your task.

Step 4: Finish It

Get the tool that you wish to use to examine the adjustments you’ve made. Load the device with the air pressure established by the new compressor adjustments. Evaluate the tool’s performance and make any necessary modifications if the output is unsatisfactory. Although it may be exhausting at first, it will become more manageable once you become accustomed to it.

Do not replace the cover until you are content with the adjustments made. A clever approach is to fine-tune the compressor to fit the demands of your most frequently used tool, thus avoiding the need for frequent adjustments.

When you have finished, it’s time to change the cover. Remember to bring the screws, cover, and a screwdriver. Position the cover back in its original place and fasten the screws securely. It’s essential to ensure that the screws are tightly secured to prevent any issues with the compressor.

Final Words

Increasing the pressure level on the air compressor will save you a significant amount of time. Also, insufficient pressure can negatively affect your work efficiency, so it’s crucial to regulate it.

Therefore, by implementing the techniques discussed in this article, you can learn how to increase the PSI on the air compressor. Also, you can ensure your air compressor delivers the necessary pressure to complete your projects quickly and efficiently.


Why is my air compressor not giving enough pressure?

There are several reasons your air compressor may not be giving enough pressure. Including leaks in the air hose or fittings, a malfunctioning pressure switch, a damaged or worn piston ring, or clogged air filters. And it is important to address and identify the leading cause of the problem to restore proper pressure.

What is the highest PSI for an air compressor?

Usually, industrial air compressors come with maximum pressure capabilities. These compressors can be 6000 PSI max, draw in the surrounding air, and compress it to levels reaching for various uses like breathing air.

How do to adjust the pressure regulator on an air compressor?

To adjust the pressure on your air pump, find the pressure regulator and change the knob clockwise or counterclockwise. To increase or decrease the air compressor pressure. And using a tire pressure gauge, you can accomplish the correct pressure and adjust as necessary. Remember to follow the manufacturer’s instructions and safety guidelines.

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