[PSUBS-MAILIST] strain relief fittings

Tue Jun 16 04:41:59 EDT 2020

 Rick, I agree with Alan.  You mentioned making a test chamber to test them.  I always test mine, and just use a threaded pipe with fittings.   It only takes a few minutes to screw it all together and test it.  Then you know.Hank
    On Tuesday, June 16, 2020, 1:53:32 AM MDT, Alan via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  

 Rick,have attached a screen shot of the blueglobe page where it says they are rated up to 15 bar. That's 217 psi or round about 440ft.As said before Emile tested them to something like 3000ft. But still he & Carsten doubled up on them.I am not sure what safety margin sealcon uses. Sometimes it's 4x with plastics, &it does have a plastic sealing insert. So maybe the cable would start extruding through at 1200ft. Possibly more if they factor in ageing. The reps have to cover their butt incase you lose your life & sub using their product. I presume they sell the plasticsealing inserts that Blueglobe advises you change every time you untighten thefitting. You could change the inserts out every couple of years so that aging isn'ta factor.What is the worst case scenario if one fails at 350 ft? The metal housing of the glandisn't going to fail, just the insert; & if the cable is running through it then water is notgoing to flow through the gap left by the torn insert in a great volume! You could calculate the water flow through the maximum hole size in the fittingif the gland & cable weren't there, & work out how much time you would havebefore the flooding was critical.Have heard of people putting their cables through valves so they can pull thewires out of connectors & close the valve off.That's my thoughts anyway. Cheers Alan

On 16/06/2020, at 4:20 AM, Rick Patton via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

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Barbara Rainone <SalesRegion2 at sealconusa.com>
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This is the response I got after discussing my delima with Sealcon. I have half a grand now in useless fittings unless they will take them back but I bought them about 4 years ago. guess I should have done my research a little better!

Rick

Hello Rick,

I was discussing this with my team mate Randy and he agreed you will not be able to use that fitting (CD09NA-6S) any deeper than 300 feet.  We have fittings with clamps but those are just going to give you more security on the pull out.  I do not think we can help you with your application due to the depth of the water.

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Barbra Rainone

Sr. Customer Service Specialist – Region 2

Sealcon

Connect with me on LinkedIn

Phone 800-456-9012 / 303-699-1135 Ext 5029

Email  SalesRegion2 at SealconUSA.com

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