08-01-2003, 11:06 AM
Join Date: Feb 2003
Its not unusual for a CO2 check valve to have a high unseat pressure. Mine is 12 psi. When you blow as hard as you can, it is only about 3 psi, so that is not too much for a CO2 check valve. Nothing sounds amiss. If the gas goes in, then it must come out. Conservation of mass.
The only other answer would be the size of the bubbles. A BC magnifies the bubbles, and you may be seeing very small bubbles inside the bubbles counter, and larger bubbles at the reactor. I know that I have that situation with my bubble counter, but there is only about a 20% discrepancy, not large factors you are seeing.