Nothing, you need to get a check valve. I use this one,
LOL, that's what I'm asking.IUnknown said:JBJ has a check valve below the bubble counter, so is this a problem?
Think of a straw with water in it. If you fill it up half way with coke and then pull it out of the coke with your finger (check valve) keeping air from entering the top, the vacuum holds the water in place. The Co2 tank would have to suck to get the water out, is that what happens when an empty tank gets cold? We need a second opinion.If the CO2 tank ran dry and then got cold for some reason, and the solenoid was open, could it pull water out of the bubble counter and into the CO2 tank due to contraction?
I've asked this question on another forum with no decent answer.TWood said:Since the Milwaukee regulator/solemoid/needle valve/bubble counter does not include a CO2 check valve at the bottom of the bubble counter, what prevents the water from inside the bubble counter itself from getting into the needle valve/solenoid/regulator? Especially when the CO2 runs out?