Re: [PSUBS-MAILIST] Alternative 02 Through Hull

["Smyth, Alec" <Alec.Smyth@compuware.com>]

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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