Answer :
To control and regulate the pressure of nitrogen being charged into the system.
Why must nitrogen be used with a regulator when charged into a system?
When nitrogen is charged into a system, it is often done at high pressure. Therefore, it is necessary to use a regulator to control the pressure of the nitrogen being introduced to the system. The regulator reduces the high pressure to a lower and safe level that is appropriate for the system being charged. Without a regulator, there is a risk of over-pressurizing the system, which can cause damage or failure. Additionally, using a regulator allows for more precise control over the pressure, which is important for ensuring the system operates correctly and safely.
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