Re: [ihc] High pressure tanks

[bearbvd@xxxxxxxxxxxxxx (Greg Hermann)]

At 11:02 AM 1/26/04, William Cunningham wrote:
>Is there a way to tell if a tank is cro-mo or stainless?

Try a magnet. 300 series stainless (austenitic) is non-magnetic.

Greg
>
> When I preped the area on the tank for taping in the drain cock the
>grinder produced very little in the way of sparks. I had no problems
>welding a protective ring of steel tubing around the drain. The tubing
>is left over from a roll cage, smitty built tube.
>
>It's too cold in my shop to see if the tank will rust.
>
>Willy
>
>On Mon, 26 Jan 2004 07:33:44 -0800
>"Jim Grammer" <jgrammer@domain.elided> wrote:
>> I hadn't thought about the drain valve, though. Yes, it is a good
>> idea to
>> drain air tanks. On a conventional tank, the idea is to prevent rust
>> and
>> possible rupture (as well as making it easier for the line filters).
>> Perhaps
>> that's not as big an issue on an SCBA tank? Don't know how they're
>> constructed... Dennis? Or anyone else?
>>
>> Forged cro-mo steel.
>>
>> Jim