I do not remember the formula

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Pawned

Pawned

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I bought an air tank without the compressor or motor. I do not know how many gallons it holds and for the life of me, I do not remember the formula
I tried googling it but seems everything I google anything it keeps transferring from one web search page to another.
I can not find the formula. Can someone help????
The tank is 24 inches in diameter and 48 inches high. I am guessing it is about 60 gallons. It needs refurbishing but for $45 how can you go wrong.
 
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there should be a placard welded on it with the gal/max pressure/date info if it's an amse tank or whatever they're called. Be careful with an old tank
 
π r^2 for the area of a circle, so π x (12)^2 = 452.4 in^2, area x height=volume so 452.4x48 = 21,714.7 cubic inches, 1 cubic inch = 0.004329 liquid gallon, so 21,714 x.004329 = 94 gallons

And what GeorgeH said. If the tank hasn't been pressurized in a long time you should probably have a hydrostatic test done on it.
 
what can you lose? how about your life? be careful. Look for the data plate welded onto the tank. If it doesn’t have one, I'd be very reluctant to put any air in that thing.
 
I agree with the others. Unless you are 100% sure the tank is safe, forget about it and move on. A compressor that size won't cost much, and an old tank could be an accident waiting to happen.
 
I inspected this tank inside and out. The only rust I can find is surface rust and it cleaned off easily with a wire brush. I am going to chemically treat the inside for rust and then reexamine it. All the welds are in perfect shape with no defects at all.
Once I finish treating the inside with the rust chemicals, I will put my camera down it again and reinspect all the welds from the inside.
I am truly amazed the condition of this tank, onced I cleaned the outside. Even the plugs came off without a problem once I gave them a quick squirt of WD40
 
If it doesn't have a placard or anything to indicate the last time it had a hydrostatic test I would absolutely have one done before pressurizing it. Although, if there's no placard, you really don't know what pressure the tank was intended to hold, and even just 10 or 20 psi can make a BIG difference to the amount of force on the tank.

A welding supply shop might be able to help with the test, if they can't do it they'll still know someone that does because all their tanks need periodic hydrostatic tests.
 
LOL they only go bad 2 ways, like shrapnel or a V2 rocket that decides which way it's going when it leaves.
 
I was in the "next" room when one let go, there is a door there now! HYDRO that thing.
 
Does this help? I did the rust treatment from the inside. All the rust was the size of sand. Nothing larger than a grain of sand. No chunks, no flakes. Just surface rust that was washed away.

BTW, I never once said that I was not going to have the tank tested, or even use it as a compressor tank, you guys assumed I was not.

20170320_161806[1].jpg
 
Good call on that we are all asses!:rofl: I believe hydros are good for ten years under 1k psi
 
I bought it thinking I may use it for lawn art. But am also now thinking about making it into a compressor.
I was thinking of cutting it in half and adding a clapper to each side.
But I do not really know what I am going to do as of yet
 
Well since you found the placard I don't see a reason why it can't be a compressor tank. The hydro is 26 years old so I'd still get a hydrostatic test done on it but that's not a big deal.
 
was that so hard? all you had to do was post the pic of the placard. Yeah, I'd use it for what it was intended, compressed air.
 
rustycowll69 said:
was that so hard? all you had to do was post the pic of the placard. Yeah, I'd use it for what it was intended, compressed air.
Click to expand...
It wasn't so hard. But, :) I was kind of enjoying the show. It was also a time management issue. This is not the only thing I am working on. I still have not decided if I will cut it in half and make bells out of them
 
While I am at it. Can someone interpret the numbers on the tag. A couple people said they think the tank should work based on the tag numbers. Which numbers and what do they mean?

I know what the date of manufacture and s/n means, but what else can you tell me.

This is not a test, I do not know what they mean

pressure tank.jpg
 
If you really, REALLY want to see a good show, go to The Garage Journal board and post this as "What size PVC air lines can I hook to my new to me compressor tank?" Go get snacks, and come back and watch the :mob:
 
JDMopar said:
If you really, REALLY want to see a good show, go to The Garage Journal board and post this as "What size PVC air lines can I hook to my new to me compressor tank?" Go get snacks, and come back and watch the :mob:
Click to expand...
Now that sounds like fun
 
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I pressurized the tank to 180 psi. I could have gone higher but the connectors and gauges I had hooked up could not hold the pressure. They failed . As I have no plans of every pressurizing the tank above 120-125 psi, I think I am safe.
 
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