CO2 Tank Size/Weight Question
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Old 12-16-2008, 08:09 PM   #1
Natty
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CO2 Tank Size/Weight Question


I just got a CO2 tank and I was wondering of the following:

1. My last 5 lber was almost twice as big as the tank I have now, so how can something a little more than half the size of my last 5lber be a 5lb CO2 tank? Is the size of the tank irrelavant?

2. How do I tell if I did indeed get a 5lber? I always want to know what I'm getting is exactly what I paid for. Can the place make a mistake and have given me something less?

It currently weighs 14lbs full. My other 5lber weighed 19~lb. I also want to ask these questions to learn more about how to read the numbers around the tank.
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Old 12-16-2008, 08:24 PM   #2
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This link helped me alot and has great info on how to read the numbers on the co2 tank.

http://www.pbnation.com/showthread.php?t=2059688
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Old 12-16-2008, 09:44 PM   #3
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These are the numbers on the bottle. So I'm wondering whats the empty weight and if its a 5 lber. 13-14 inches high and 5 inches in diameter.

Left


More to the right
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Old 12-16-2008, 10:25 PM   #4
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Here is from another sie aquariumplants.com for there aluminum tanks. should be the same wether al or steel.

Tank(s) Specs:

2.5 lbs:
Capacity: 2.5 lbs compressed Co2
Overall height: 14.1"
Overall diameter: 4.38"


5 lbs:
Capacity: 5 lbs compressed Co2
Overall height: 17.5"
Overall diameter: 5.25"


10 lbs:
Capacity: 10 lbs compressed Co2
Overall height: 20.25"
Overall diameter: 6.9"


20 lbs:
Capacity: 20 lbs compressed Co2
Overall height: 27.13"
Overall diameter: 8"
(comes with black plastic handle)

50 lbs:
Capacity: 50 lbs compressed Co2
Overall height: 52.63"
Overall diameter: 7.25"
(comes with black plastic handle)

I would say the overall height includes the valve. HTH

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Old 12-16-2008, 10:34 PM   #5
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full shot of your tank?
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Old 12-16-2008, 11:15 PM   #6
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It's 5" in diameter and 17" high which includes bottom of tank to tip of turning valve (13-14 for the tank only)

You still want a pic? Not sure what that'll do but if you need it tell me again.
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Old 12-16-2008, 11:17 PM   #7
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its pretty close to the 5lb listing above.... sure your last tank wasn't larger?
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Old 12-16-2008, 11:22 PM   #8
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Quote:
Originally Posted by Craigthor View Post
its pretty close to the 5lb listing above.... sure your last tank wasn't larger?
Nope...it was listed 5lbs....

odd huh?
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Old 12-16-2008, 11:42 PM   #9
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Here's the tank...had to wait till batteries charged.

That's a 500ml bottle of PRIME and a long envelope for size comparison. Also the eheim 2217 as well.
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Old 12-17-2008, 12:17 AM   #10
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that looks like a 2.5lb tank to me
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Old 12-17-2008, 02:02 AM   #11
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The empty and full weight on my 10lb tank is stamped on the brass shaft below the knob. There is an E before the empty weight and F before the full. The numbers in your first picture show the hydro test dates. You should be able to check when the tank was last tested. Based on the visible dates it looks like the tank is at least 28 years old.
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Old 12-17-2008, 02:43 AM   #12
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Quote:
Originally Posted by captain_bu View Post
The empty and full weight on my 10lb tank is stamped on the brass shaft below the knob. There is an E before the empty weight and F before the full. The numbers in your first picture show the hydro test dates. You should be able to check when the tank was last tested. Based on the visible dates it looks like the tank is at least 28 years old.
I checked it out and these are the readings that I got:

B4 08N CG 320 33 04
WP 300 Bar
Made in the USA

Other than made in the USA, I don't know wha thte numbers stand for though lol.
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Old 12-17-2008, 02:45 AM   #13
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CG 320 is the type of valve used
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Old 12-17-2008, 02:50 AM   #14
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Quote:
Originally Posted by Craigthor View Post
CG 320 is the type of valve used
Anything that points out the weight?

I'm going to give them a call tomorrow after finals.
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Old 12-17-2008, 10:15 PM   #15
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UPDATE

I called the place and he confirmed that it is indeed a 5 lber.

He said the other one that I had was an ackward sized one and it was because it was an oxygen tank or something (my brain is completely bombed after finals so excuse any grammar flaws, I'm still buzzing and dizzy from studying).

He also said the pressure reading should be around 700-800 for a 5lb CO2 tank.

Just incase someone wants to learn from my experience. He said nothing about the numbers on the bottle though after I asked him.
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