[PSUBS-MAILIST] Penetrator Air Void Question/Concern

[Steve McQueen via Personal_Submersibles]

Thanks Hank. The vendor literature for the Conax gland fitting implies that you can use it on a multiconductor cable but I am sure it is not the best scenario.  I will let you know what results I get.

 

Steve

 

From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org] On Behalf Of hank pronk via Personal_Submersibles
Sent: Tuesday, January 31, 2017 7:39 PM
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
Subject: Re: [PSUBS-MAILIST] Penetrator Air Void Question/Concern

 

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.

Hank

Thought 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 <mailto:personal_submersibles at psubs.org> > wrote:

 

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 <mailto: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 globe

outside & inside, & the cable between would have to travel through

a void. The inner cable gland would be a back up for any leaks, & also

stop the cable extruding in to the hull.

I am using them, & I have always been wary of the cross sectional make up

of the wires; ie. if you have two wires in the cable can the cable sheath crush

in an oblong shape & let water through the cable gland!

Alan

 

  _____  

From: Steve McQueen via Personal_Submersibles <personal_submersibles at psubs.org <mailto:personal_submersibles at psubs.org> >
To: personal_submersibles at psubs.org <mailto: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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