[PSUBS-MAILIST] hatch detail

[Sean T. Stevenson via Personal_Submersibles]

Sorry Alan, the detail was suppressed when I created the image. It isn't really a third groove, but rather just a bit of relief over most of that middle area so that there is positive clearance all the way around (no metal to metal contact). I can get away with this because the conical bearing area is predominately carrying the load.

Sean


On March 17, 2016 1:42:08 PM MDT, Alan James via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>Hi Sean,you are not showing a third grove for the vacuum path!If you
>get a good metal to metal seal either side of the vacuum hole then
>youwon't be able to monitor any leak or seat the rest of the o-ring, or
>is their agrove in the landing for this.Cheers Alan
>
>     
>
>From: Sean T. Stevenson via Personal_Submersibles
><personal_submersibles at psubs.org>
>To: Personal Submersibles General Discussion
><personal_submersibles at psubs.org> 
> Sent: Thursday, March 17, 2016 5:29 PM
> Subject: [PSUBS-MAILIST] hatch detail
>  
>I sketched the double o-ring seal idea on one of my hatches, to
>illustrate what I was getting at.  Image is attached.  The channel
>through the pressure boundary would connect to a vacuum pump and
>pressure transducer.
>
>Sean
>
>
>_______________________________________________
>Personal_Submersibles mailing list
>Personal_Submersibles at psubs.org
>http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>
>
>
>
>------------------------------------------------------------------------
>
>_______________________________________________
>Personal_Submersibles mailing list
>Personal_Submersibles at psubs.org
>http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20160317/f54705c1/attachment-0001.html>