My father was the plant superintendent at Podbielniak, Inc. in Chicago. My brother and I used to visit the factory on Ohio St. with him on Saturdays. My father loved working for Podbielniak, Inc.
Addison, it is the pressure balance that forces the light liquid to move towards the center, where the LL outlet is. As long as the machine is fed with a mixture and both HL and LL outlets are open and controlled at the right pressure, there is no other way for the light liquid than flow to the center
