>  EH> I've pumped the 15 pound size of freon tank to well over 400 PSI
 >  EH> with no sign of strain.
 > I have two freon bottles here (both older with the steel plug in the
 > bottom) I was also wondering if a propane bottle would be okay. I can
 > get new ones on sale al Wallmart for about $10 or so. Any idea what
 > these are rated at?
I've tested old ones to 550 lbs with no hint of trouble. I've even taken 
dints out by rotating so that there is a pocket of air at the dint (tank is 
filled with water of course!) and then heating carefully while under 
pressure. When done, you'd never know there had been a bump. Any old frig 
compressor still in good shape will develop 500 - 600 lbs and 25-26 inches of 
vacuum. Fill the test tank with water, connect the outlet of the little 
compressor and in seconds you test is complete!
 >  EH> Hydrostatic testing is of course the way to go, but putting the
 >  EH> tank out in the boonies where it can blow up if it likes is the
 >  EH> next best thing.
 > I figured to build an enclosure beside the garage (on the far of
 > everything).
Cinderblock or concrete of course. ;-)
 >  EH> Also don't use water heater tanks unless you like to live
 >  EH> dangerously, ESPECIALLY if your name is Jerry!    *I* use one
It is but you've got the wrong guy! Done a lot of foolish things and had a 
few close calls, but nothing related to vapors. 
 >  EH> but then I've pumped it to 350+PSI even after I'd welded up several
 >  EH> holes, and I limit it to 100PSI and don't trust it any further than
 >  EH> I can throw it. 
 > I think I would rather string a few smaller tanks together. I read you
 > "Jerry Bomb" story and while it was a bit funny (only cause no one was
 > hurt), I think I will pass. Besides, I do not think Edwards AFB would
 > like unexpected missle launches (they are only a couple miles north of
 > here). I would probably would have a hard time talking my way out of
 > shooting down a B-2 bomber with a hot water heater (they over fly here
 > on a regular basis).
 >  EH> Do as I say, not as I do!  I'm old and don't CARE anymore.
 > Heck your not that old....
Ain't no fun in being/getting old, that is but unless you've got a good 
reason to shorten the process? 
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