New to legging. CO2 tank question

[HealeyA87]

EDIT: I have the answer I need. Thank you all who helped. This thread can be deleted now.




I going to keg my first batch this week. I just went to get my co2 tank filled. When I attached the regulator, it is reading 600psi on the high pressure side. The tank has 7.5 lbs stamped on it. I just wanna make sure they filled it enough. I know it's sold by weight and I don't have a way to measure that right now so I figured I would ask some people who have experience with it. The lady said she charged me
For 5lbs.

 

[m00ps]

ive never seen a 7.5lb tank. wait...is it like long and slender? I think I saw a 7lb one like that once

Well theres 2 outcomes
- you paid for 5lb of CO2 and thats what you got
- they filled your tank all the way (guessing this is what they always do) but didnt have a price or catalogued item to ringup for 7.5lb so they charged you for 5lb

either way, youre good to go

 

[HealeyA87]

Now that I look it says TW before the 7.5. I bet that's tank weight? I don't know much on what the stamped stuff means lol.


View attachment ImageUploadedByHome Brew1453413253.694852.jpg

 

[TheMadKing]

TW stands for tare weight. The empty weight of the tank. So if you want to know how much CO2 you have, just subtract 7.5 from whatever the tank+gas weighs.

 

[HealeyA87]

These are the tanks I have. Don't worry, I'm not using the rusted one. I acquired it when I was looking for a co2 tank. But the silver one on the right is the one I filed

View attachment ImageUploadedByHome Brew1453413385.643065.jpg
View attachment ImageUploadedByHome Brew1453413318.570057.jpg

 

[HealeyA87]

TW stands for tare weight. The empty weight of the tank. So if you want to know how much CO2 you have, just subtract 7.5 from whatever the tank+gas weighs.

Thanks. I'll see if I can get to a scale

 

[TexasDroughtBrewery]

Looks like a 5....if it is a 7.5 then its a unicorn.

 

[HealeyA87]

Haha sounds good. I saw the 7.5 and was confused but now I know.

 

[TheMadKing]

Looks like a 5....if it is a 7.5 then its a unicorn.

It is a 5# tank. That refers to the amount of CO2 that it will hold, not the actual weight of the metal tank.

5# tanks weight about 7.5lbs (mine is 7.53). Makes perfect sense right?

 

[HealeyA87]

Yup it all makes sense. I thought the stamp was indicating how much co2 it held, I just didn't know they stamped the tank weight on there: that's why I was confused. I just weight the tank and it's 12.6lbs so I definitely got my 5lbs of co2.

 

[Firewalker11]

The TW7.5 lb is: Tare Weight, 7.5 pounds. A little further back on the ring should be marking of, "#5 CO2".

The tare is the weight of the bottle empty, it will weight 12.5 pounds when full.

 

[kev211]

Im pretty sure the 7.5lbs is the dry weight of the tank. One way to know for sure is weigh it without the regulator before using any co2. If she gave you 5lbs then it should be ~12.5lbs. 600psi sounds about right as well so it seems as though you are all set

 

[TheMadKing]

The dead horse... it has been beaten

 

[Firewalker11]

The dead horse... it has been beaten

Thanks captain,

 

[day_trippr]

The dead horse... it has been beaten

Only lightly beaten. It deserves more. Much more.

Cheers! (That oughtta do it )