Where is the air pressure lowest in the compression system?

In a compression system, the air pressure is typically lowest at the intake. This is because the intake is the point where ambient air enters the system before it is compressed. At this stage, the air has not yet been subjected to the processes of compression, where its pressure is increased significantly.

By contrast, as air moves through the compressor, it is being compressed, which increases its pressure. The tank, meanwhile, serves as a storage vessel where the air is typically kept at a higher pressure until it is needed for use. Water is not directly relevant to this question as it pertains to the air compression process unless discussing moisture content in the air, but it does not relate to the pressure levels of the compressed air itself in this context.