[PSUBS-MAILIST] hatch detail

[Alan James via Personal_Submersibles]

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


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