Re: CO2 bottle pressure gauge
>Right, more or less. In the last 5 years or so, I've bought 7 or 8
>20 pound CO2 tanks. Each showed the exact same pressure (about 1200
>psi) and then, over a few days or a week, dropped to 0. As soon
>as that needle moves, the tank is empty - you're running on fumes.
Hmmm, this isn't my experience. I recently refilled my 20# cylinder
after watching it go from the usual 900 psi down to about 100 psi over
the past two months (before Thanksgiving; I got a refill Jan 11). My
tank uses about 2 bubbles/second.
You have a leak somewhere. Did you do the soapy water test (put soapy
water on all your connections, and check for bubbles)? 7 or 8 tanks
over 5 years sounds like a lot, unless you have hundreds of gallons of
Are you running high pressure through vinyl tubing somewhere (like
from the regulator to the needle valve)? Vinyl tubing is slightly gas
permeable. I use copper tubing between the regualtor and the needle
valve, and vinyl from the needle valve to the tank.