What's is vaccum and how much pressure standing and running pressure r22 ,r410 ...?

Question

Accepted Answer

Vacuum is a state of low pressure where the gas or air is removed from a closed space.

Vacuum is created by removing gas or air from a closed system.
It is measured in units of pressure, such as inches of mercury (inHg) or millibars (mbar).
Standing pressure refers to the pressure of the refrigerant in the system when it is not running.
Running pressure refers to the pressure of the refrigerant in the system when it is operating.
The pressure values for R22 and R410A refrigerants vary depending on the specific conditions and equipment being used.