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  #16  
Old 03-15-2010, 05:36 PM
cmac2012's Avatar
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Location: Redwood City, CA
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Quote:
Originally Posted by 4x4_Welder View Post
Do not chance it. You can get a replacement tank for less than 1/3 of the price of a new compressor, or find a good used tank with a bad pump for next to nothing on CL. I have seen tanks go both ways, one was a gas-powered unit at a rental shop (horrible nightmare place that should have been shut down long before I got there) that just leaked and then popped the valve out the bottom. The other was a converted water heater tank in the attic of a friend's shop. He had three 80gallon tanks in a row, one of the end ones blew violently and took out the middle one. There was no roof left on the shop.
Whoa.

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  #17  
Old 03-15-2010, 08:11 PM
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Quote:
Originally Posted by jt20 View Post
that is brilliant, Barry.

how about filling it 'mostly' with water then using less than 10% air on top.. this thing sits horizontally. I can still utilize the gauges and pump that I have by doing this.

It is one of those older style compressors with a very heavy duty pump.

Tank says 150 psi working pressure.


Perhaps a radiator shop might test it??
No noticeable amount of air should be in any hydrostatic test. That reduces the safety feature. If tank lets go you still have ten percent of compressed air left in there at say 300 lbs pressure to expand.

The water will for all practical purposes not expand at all if the vessel fails. I do not believe rad shops have any ability or need to reach the kind of pressures we are talking about here.
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  #18  
Old 03-16-2010, 07:29 PM
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Sorry to get a bit off topic but ive often wondered if elctrolysis would work in the inside of the tank to remove rust like suspending and elctrode (rebar) thru the 'plumbing ports' on a tank and submerging it.

i have an old one 60 or 80 gal that i want to try this with i bought it used and its old but looks to be decent but im unsure. has anyone tried this?
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1987 300SDL "Rudolf" 239k 8/10


Gone but not forgotten
-1980 F250 4X4 351C Snowplow "The Beast"
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-2002 Honda Accord EX-V6 loaded 107k, My first brand new car!


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  #19  
Old 03-18-2010, 04:26 PM
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I did some more inspecting / poking around on the tank.

Got a better view from a different angle and used a dental pick through a hole in the bottom...

its toast. -Thank you all for being very clear.
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  #20  
Old 03-18-2010, 05:07 PM
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turn it into a smoker
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  #21  
Old 03-18-2010, 05:54 PM
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Quote:
Originally Posted by rsieracki View Post
Sorry to get a bit off topic but ive often wondered if elctrolysis would work in the inside of the tank to remove rust like suspending and elctrode (rebar) thru the 'plumbing ports' on a tank and submerging it.

i have an old one 60 or 80 gal that i want to try this with i bought it used and its old but looks to be decent but im unsure. has anyone tried this?
Some type of sacrificial anode might help. It had better be very low on the scale. Although there are no mix of different metals in contact usually. This might help or slow down future rusting. I doubt it would do much with what is already present.

Now if you want to introduce an electric current you can strip the rust off electrolically.
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  #22  
Old 03-18-2010, 05:56 PM
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Lest anyone else reading this has a questionable tank..

One question....

Can you say .... GRENADE ?
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  #23  
Old 03-18-2010, 06:04 PM
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Location: Vulcan, AB, Canada
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Been looking for a 30-50 gallon upright compressor tank to make a propane forge out of. Or I suppose a hot water tank with a somewhat rusted bottom would work as well...
As one member suggested, it would make a really good meat smoker as well. Meat that is soaked in a spicy marinade, then smoked and then BBQed is so good.... I"m getting hungry now...
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  #24  
Old 03-18-2010, 07:27 PM
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Quote:
Originally Posted by barry123400 View Post
Now if you want to introduce an electric current you can strip the rust off electrolically.

thats exactly what i meant, i was just asking if anyone has tried it. i'm thinking dig a pit, or find a large enough container to submerge the tank with the electrode suspended in the solution and thru the holes in the tank and electrify it
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1987 300SDL "Rudolf" 239k 8/10


Gone but not forgotten
-1980 F250 4X4 351C Snowplow "The Beast"
-1976 Caddy Eldo Convertible, in triple red. "Red headed Slut"
-2002 Honda Accord EX-V6 loaded 107k, My first brand new car!


*IM A HORRIBLE SPELLER*
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  #25  
Old 03-18-2010, 10:45 PM
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Any old air tank we have gets the gas axe (oxy torch) to it before we throw it out. That way no one can try & use it as a pressure tank again.

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