CO2 Tank

Re: CO2 Tank

when I notice my valve in the red zone (i only check like once a week)
I try to get it refilled within that week (whenever I'm free)...

I got a 10lb.

 

Re: CO2 Tank

I have a 26lb bottle, think its going to be a long time till I need to check mine

 

Re: CO2 Tank

I've read somewhere that if you run a tank near empty it can dump too much CO2 into the water. I certainly don't know this for a fact as I've only just started using my cylinder.

Ian

 

Re: CO2 Tank

Yeah well, we don't really want to go there again...

If you have a needle valve then it's okay to run the CO2 tank empty. What will happen is that there will be a small rise in the output pressure which will increase the bubble rate slightly. Unless the KH is borderline or you are running the tank at absolute maximum CO2, the increase won't be noticeable.

I have my CO2 line inserted into a submersible pump and can hear a little whoosh each time a bubble hits. Last night I heard no woosh, and sure enough the CO2 tank is empty. I never even noticed it until it was quiet. I've run CO2 tanks empty for years with no ill effect, as long as there is a needle valve to control the outflow.

TW

 

Re: CO2 Tank

My small pressurised ran out recently. Very little notice, a few days, but just fizzled out. It has a needle valve.
Martin

 

Re: CO2 Tank

I let me 20lb go to empty, but then, it was the weekend and I couldn't get a refill until Monday. I have an empty 10lb; I think I'll be refilling this one as well as an emergency backup.

 

Re: CO2 Tank

A friend of mine works at a welding store where I get mine re-filled and he says that the red zone (re-fill) is indicated because that is where there is no more “liquid” CO2 in the tank. Yes there is pressure but not as concentrated as pure CO2. The pressure fall off is also faster below 400 psi.