When to refill/exchange CO2 tank?

It is now out of liquid. It will drop rapidly from this point. Keep an eye on it.
When it gets to 600psi, replace/refill it. It will have a minute amount of gas at that point.

Len
 
I will be astonished if you get more than 6 mons. out of a tank of CO2(even a 20 pounder).

Len,

You were absolutely correct. I did find a small leak at one of the connections yesterday, which I easily fixed. I wonder how much CO2 I wasted over the last 5+ months. The local welding supply shop will exchange a full 20lb tank for $9. Should have taken care of it yesterday. Thanks for your input.

Scott
 
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