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the bouncing needle is normal. Mine does the same thing. it because instead of a needle valve slowing the flow rate the box actually counts the bubble and opens and closes more or less a solenoid. Thats why you get the pulsing effect
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Did you have any trouble with the bleed test. Mine drops from 450psi to 400 and stays around there.
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No, I've not noticed anything like that.
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I can not get this to stop failing the bleed test. I have talked to them a few times. Driving me nuts!
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Have you tried using soapy water to verify you aren't losing any gas at the brass connection?
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I think this might work better than other regulators for giving CO2 to phytoplankton cultures…. bubble counters are so iffy, and in my experience check valves don't work once the solenoid shuts off and there is back pressure. THANKS!
