Re: [PSUBS-MAILIST] Alternative 02 Through Hull

[MerlinSub@t-online.de]

Some years ago I didnt clean new stainless steel O2 pipes. Just use them. 
The just get brown and coloured from the outside because of the heat inside.. 

vbr Carsten 

"Smyth, Alec" <Alec.Smyth@compuware.com> schrieb:
> Hi James,
> 
> It needs to be removeable so you can clean it. For oxygen service,  
> cleaning is a pretty thorough process. I recommend the book "Oxygen  
> Hacker's Companion" by Vance Harlow for instructions. Actually I'd say  
> it's more than a recommendation... if you're putting in O2, learning  
> this is absolutely indispensable from a safety perspective.
> 
> Thanks,
> 
> Alec
> 
> 
> 
> On May 13, 2010, at 8:30 AM, "James Frankland" <james@guernseysubmarine.com 
>  > wrote:
> 
> > hi All,
> >
> > Can someone let me know why the O2 through hull shown on page 41 of  
> > K350 plans (see attachment) needs to be made like that?  Is it just  
> > to be removeable? At the end of the day its a through hull with 1/2  
> > inch NPT at each end just like a normal pipe nipple?
> >
> > Whats to stop me just welding in a normal 1/2 inch pipe nipple?  Is  
> > there is a specific need for the 1/4 inch hole (perhaps oxygen  
> > safety)?  If so i could just make a 1/2 inch bar with a 1/4 inch  
> > hole and weld that in?
> >
> > I cant see the point in that system unless im missing something?
> >
> > Thanks as always
> > James
> >
> >
> >
> >
> > <O2.JPG>
> 
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