[PSUBS-MAILIST] Penetrator Air Void Question/Concern

[hank pronk via Personal_Submersibles]

Steve,My first reaction was to say no worries, but, if the outside blue globe leaks even a little, you will have salt water sitting in the void.  Either forget the inside blue globe or put a tee on the nipple and run the wires through that then into the inside blue globe.  Then orient the tee so the open fitting is vertical, then fill with oil and cap it.HankThought you could not do multiple wires in a compression fitting? 

    On Tuesday, January 31, 2017 3:43 PM, Steve McQueen via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
 

 #yiv4026158695 #yiv4026158695 -- _filtered #yiv4026158695 {font-family:Helvetica;panose-1:2 11 6 4 2 2 2 2 2 4;} _filtered #yiv4026158695 {panose-1:2 4 5 3 5 4 6 3 2 4;} _filtered #yiv4026158695 {font-family:Calibri;panose-1:2 15 5 2 2 2 4 3 2 4;}#yiv4026158695 #yiv4026158695 p.yiv4026158695MsoNormal, #yiv4026158695 li.yiv4026158695MsoNormal, #yiv4026158695 div.yiv4026158695MsoNormal {margin:0in;margin-bottom:.0001pt;font-size:12.0pt;}#yiv4026158695 a:link, #yiv4026158695 span.yiv4026158695MsoHyperlink {color:blue;text-decoration:underline;}#yiv4026158695 a:visited, #yiv4026158695 span.yiv4026158695MsoHyperlinkFollowed {color:purple;text-decoration:underline;}#yiv4026158695 p.yiv4026158695msonormal0, #yiv4026158695 li.yiv4026158695msonormal0, #yiv4026158695 div.yiv4026158695msonormal0 {margin-right:0in;margin-left:0in;font-size:12.0pt;}#yiv4026158695 span.yiv4026158695EmailStyle18 {color:windowtext;}#yiv4026158695 .yiv4026158695MsoChpDefault {font-size:10.0pt;} _filtered #yiv4026158695 {margin:1.0in 1.0in 1.0in 1.0in;}#yiv4026158695 div.yiv4026158695WordSection1 {}#yiv4026158695 Alan, yes I think you understand my application.  Thanks for the feedback. I don’t think I will worry much about this.  Sometimes things are easier when you are only dealing with K-250 type depths : )  Steve  From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org] On Behalf Of Alan James via Personal_Submersibles
Sent: Tuesday, January 31, 2017 4:51 PM
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
Subject: Re: [PSUBS-MAILIST] Penetrator Air Void Question/Concern  Steve,if I am reading it right it doesn't seem a problem.This must be what Emile & Carsten do. They have a blue globeoutside & inside, & the cable between would have to travel througha void. The inner cable gland would be a back up for any leaks, & alsostop the cable extruding in to the hull.I am using them, & I have always been wary of the cross sectional make upof the wires; ie. if you have two wires in the cable can the cable sheath crushin an oblong shape & let water through the cable gland!Alan  From: Steve McQueen via Personal_Submersibles <personal_submersibles at psubs.org>
To: personal_submersibles at psubs.org 
Sent: Wednesday, February 1, 2017 3:51 AM
Subject: [PSUBS-MAILIST] Penetrator Air Void Question/Concern
All, I am running a multi conductor cable (11-12mm OD) for my 12V stern thruster thru an existing 1/2" pipe nipple in the aft head of my K-250.

I am using a Blueglobe gland fitting (BG 220 VA, rated @ 1,160 psig) on the outboard pressure side of the nipple and a Conax gland (PG5-500-A-N,rated @ 800 psig) for the gland fitting inboard.

I was originally only going to have interior Conax gland and let the pipe free flood.  Then I decided I wanted to have redundancy and keep the pipe interior dry to help prevent corrosion (it is old school (not SS)). 

My question:  Is the air void that will exist between the 2 gland fittings a concern? Think empty pipe with both ends capped. I'm thinking not...


Thanks,
Steve
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