Quote:
Originally Posted by Bob Kontak
The equal to atmospheric pressure in the system immediately after discharge (without mechanical evacuation, i.e., no vacuum) pushes back with the same force.
It will not rush in. It will mingle.
Pull a vacuum and THEN bust open the system you got moisture throughout instantly.
There is no argument to not pull a vacuum for atmospheric air is dead space and it's not intended to be there by system design.
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But it can only "mingle" at the point of opening. Wouldn't it take a relatively long to time, in minutes, for enough "mingling" to occur to compromise the system.
Not denying OP needs to pull a good vacuum.