What is the role of the limiting hole on the air compressor return pipe?

Almost all screw air compressors have a small flow limiting hole on the return pipe, and many customers do not know what role this setting plays. If it is removed, will it cause any impact?As a matter of fact, some units have tried to take away the current limiting hole due to high fuel consumption, but nothing unusual has been found for the time being. I wonder if it will damage anything in the long run?A brief explanation of these problems will be given below.

Its main function has two: 1, one-way;2. Limiting current.

One-way is the most important function to ensure that the oil and gas mixture flows from the oil to the nose under the boot condition, and prevent the oil and gas mixture from flowing back to the oil after the shutdown.If it is not set, it may lead to a decline in oil separation effect, or even a boot from the vent valve port ejection of oil and gas.

The current limiting effect is mainly to ensure the appropriate flow of oil and gas to return to the machine head. Too much will lose the air compressor exhaust, too little will lead to poor oil content, and the exhaust oil content is too high.Unlimited flow will certainly affect the exhaust capacity, the maximum loss of 50%.

In short, it has its raison d 'etre and cannot be dismissed easily.