byte Posted January 23, 2008 Report Share Posted January 23, 2008 Hello: Could someone tell me about how many psi a FULL bottle of CO2 should be at. I had 2 bottles filled and they seem to have about 750 psi in them. I thought the tanks should be filled to about 1800 psi. I know they fill them by weight, not pressure, but I wonder if I only got half a bottle full. The tanks I have are small (2.5 pounds) and are just for backup when the big tank goes empty. Quote Link to comment Share on other sites More sharing options...
jvision Posted January 23, 2008 Report Share Posted January 23, 2008 If I recall, mine are around 1200 psi when full. Quote Link to comment Share on other sites More sharing options...
Ruadh Posted January 24, 2008 Report Share Posted January 24, 2008 Hello: Could someone tell me about how many psi a FULL bottle of CO2 should be at. I had 2 bottles filled and they seem to have about 750 psi in them. I thought the tanks should be filled to about 1800 psi. I know they fill them by weight, not pressure, but I wonder if I only got half a bottle full. The tanks I have are small (2.5 pounds) and are just for backup when the big tank goes empty. Mine, too, was at about 1200 lbs in a 25 lb tank. Now that doesn't mean that a 2.5 lb tank would fill to the same pressure. My best advice would be to call a welding supply store to see what they say. They should know or know where to find out. Rick Quote Link to comment Share on other sites More sharing options...
trixie Posted January 24, 2008 Report Share Posted January 24, 2008 (edited) As long as there is liquid in the tank even one lb the pressure should be close to 850 LBS Look on your tank the empty weight is stamped put it on a scale it should read tank +co2 = Edited January 24, 2008 by trixie Quote Link to comment Share on other sites More sharing options...
byte Posted January 24, 2008 Author Report Share Posted January 24, 2008 (edited) Thanks everyone... I could be my high pressure gauge that is not accurate. I will find out when I get my 20 lb bottle back from being filled at a different shop. There is no empty weight on the bottle, but the full bottles do weight about 6 lbs. From a rough weighing on a bathroom scale, I would say there is about 2.5 lbs in bottle. I was just surprised to see the pressure so low. Edited January 24, 2008 by byte Quote Link to comment Share on other sites More sharing options...
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