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[APD] Re: Backflow into CO2 systems

Brown, Diane at Brown_D at kids_wustl.edu wrote:

> The problem:  when my CO2 tank runs out, water backs up in the system,
> sometimes past the needle valves, but never back to the CO2 cylinder. Still,
> it's a pain in the behind to have to undo connections and blow out the water
> to get the system going again.
> What can I add to the system to keep the water from backing up?

I don't use check valves either, but I have a coil of tubing between the
tank and bubble counter. It gives me a little extra time to notice when the
CO2 runs out.

Dan Dixon

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