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co2 tank filling

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dwhite55:
Is it safe to assume that a 5 # co2 tank should weigh 5# more when full than empty?
Every time I have gotten mine filled it is less than 3 #s. Today I had it filled and it weighs 1# 14.4 oz more than when it was empty.

I questioned the guy before and he gave me some BS about it may heat up and expand so they can't fill them to 5#s.

ultravista:
I fill my 10# tank up at a local fire supression place and they weigh the empty bottle and add 10 pounds. I've watched them do it. It may be a little less than 10 but it's in the ballpark.

While the gas is cold, I doubt you're loosing 4 pounds.

Slowbrew:
A 5lb tank should hold 5lbs of CO2.  The gas is under enough pressure to become a liquid.  I don't want to be harsh but he either doesn't know what he is talking about or is intentionally lying to pad his profits.   Hopefully you can find a different supplier.  I use a fire equipment company for my refills.  Look for "carbonic" suppliers in you area.

Paul

dak0415:

--- Quote from: dwhite55 on December 20, 2012, 08:59:45 PM ---I questioned the guy before and he gave me some BS about it may heat up and expand so they can't fill them to 5#s.

--- End quote ---
Its like Blue Rhino only putting 15# in a 20# propane tank "for safety".  When my local guy fills my propane tank, its 20# heavier.
Sounds to me like you need to find another place to get your tank filled.  I just swap my 5# tank out at Airgas, but I have them refill the 15# tank.

dak0415:

--- Quote from: Slowbrew on December 21, 2012, 06:16:12 AM ---A 5lb tank should hold 5lbs of CO2.

--- End quote ---

+1.  That's why the call it a 5# tank :)

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