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The short answer to the question is that it is almost impossible to
remove rust spots alone; it's much easier to tumble the tank.
Carborundum chips and a tumbler is the standard, safe, tested and
effective way to remove rust. Most tumbling operations take only an
hour or so. After tumbling, remove the tumbling media and blow out
the dust with compressed air. No rinse is necessary if the tank will
be used for air or EAN 40 or less. A layer of fine dust WILL remain
adhered to the tank walls, however this will not present a problem
when using the tank with compressed air.
If you want to use the tank for O2, it should be flushed with hot
water and simple green, TSP or another easily soluble detergent. After
a through rinsing the tank should be blown dry with O2 compatible
compressed air, or better yet, nitrogen or another inert gas, to
prevent flash rust.
Andy Cohen
______________________________ Reply Separator _________________________________
A quick look through the shelves at the local hardware stores revealed
that most rust removers (if used to remove rust from your tanks) will give
you cancer before you reach deco.
In other words; can anyone give me a tip on a good rust remover that
would be suitable to use on a small rust spot (in a PST 72), and at the same
time leave the tank suitable to breathe (O2) from ?
Chemical names ? Product names ?
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