<p dir="ltr">Hi all,<br>
Just wondering if my last post on this subject went though? I'm curious about whether the inside-out testing chamber is useful to anyone (and also to heat from Alan about where to get blue globe cable glands down under).</p>
<p dir="ltr">Cheers,<br>
Steve</p>
<div class="gmail_quote">On 16/11/2015 1:37 PM, "Stephen Fordyce" <<a href="mailto:stephen.fordyce@gmail.com">stephen.fordyce@gmail.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><p dir="ltr">Hey guys,<br>
If you're going to make a small pressure chamber to go inside the big one just for testing penetrators, how about just making your small one so that you can screw the penetrator onto the inside of it?</p>
<p dir="ltr">See sketch attached.</p>
<p dir="ltr">I did this to test some cable gland/penetrators I made for underwater lights and it was very quick and easy to put together, it was small enough that I could use standard black plastic fittings from Bunnings as they were rated to something like 100m water depth.</p>
<p dir="ltr">I also found that sealing the end of the cable with liquid electrical tape worked fine to prevent leaks through the cable stands at these pressures (but only for external pressure!).</p>
<p dir="ltr">Cheers,<br>
Steve</p>
<p dir="ltr">PS: where/how do you get blue globe cable glands down under??</p>
<div class="gmail_quote">On 16/11/2015 6:38 AM, "Alan James via Personal_Submersibles" <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div style="color:#000;background-color:#fff;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"><div><span>Hank,</span></div><div dir="ltr"><span>you are right. My first port of call is to visit a large hydraulic</span></div><div dir="ltr"><span>service & manufacturing plant in case they have something </span></div><div dir="ltr"><span>lying around, or can suggest anything. </span></div><div dir="ltr"><span>I have been reading the penetrator section in</span></div><div dir="ltr"><span>"Busby". Apparently the European method is to take the cable</span></div><div dir="ltr"><span>right through the penetrator & the American method is to have</span></div><div dir="ltr"><span>pins going through. With the European method sometimes they</span></div><div dir="ltr"><span>inject resin under pressure inside the individual wire insulations</span></div><div dir="ltr"><span>to seal them in case the cable is sheared.</span></div><div dir="ltr"><span>G.L. require that there is no leak after a cable breakage, so I</span></div><div dir="ltr"><span>think the pin option is better in that case. </span></div><div dir="ltr"><span>Busby said most of the failures happened at the pin / wiring interface. </span></div><div dir="ltr"><span>I imagine </span><span>it would be a weak point if you pulled on the cable. </span></div><div dir="ltr"><span>T</span>he idea of supporting this point with the silicone & casting over </div><div dir="ltr">the top must have merit. </div><div dir="ltr">Some manufacturers brazed washers to the pins to stop them </div><div dir="ltr">extruding through the resin. I don't think I need to worry about that at 500ft, </div><div dir="ltr">but maybe a few dots of brazing on the pins would help it a bit.</div><div dir="ltr">Cheers Alan</div><br> <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div dir="ltr"> <hr size="1"> <font size="2" face="Arial"> <b><span style="font-weight:bold">From:</span></b> hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>><br> <b><span style="font-weight:bold">To:</span></b> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> <br> <b><span style="font-weight:bold">Sent:</span></b> Monday, November 16, 2015 7:46 AM<br> <b><span style="font-weight:bold">Subject:</span></b> Re: [PSUBS-MAILIST] Pressure Test Chamber<br> </font> </div> <div><br><div><div><div style="color:#000;background-color:#fff;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:12px"><div><span>Alan,</span></div><div dir="ltr"><span>I was looking around NZ online for a hydraulic cylinder, you guys have it tough for surplus stuff. </span></div><div dir="ltr"><span>Hank</span></div> <br clear="none"><div><br clear="none"><br clear="none"></div><div style="display:block"> <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:12px"> <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div><br><br></div><div><div dir="ltr"> <font size="2" face="Arial"> On Sunday, November 15, 2015 11:04 AM, Alan James via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> wrote:<br clear="none"> </font> </div> <br clear="none"><br clear="none"> <div><div><div><div style="color:#000;background-color:#fff;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"><div><span>Thanks Hank,</span></div><div><span>I like your idea of the small air chamber to test the through hulls,</span></div><div><span>I was intending to screw them to the inside of a fitting in the end cap / lid.</span></div><div><span>Will make inquiries re cylinders.</span></div><div><span>Alan</span></div><br clear="none"> <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div><div dir="ltr"> <hr size="1"> <font size="2" face="Arial"> <b><span style="font-weight:bold">From:</span></b> hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>><br clear="none"> <b><span style="font-weight:bold">To:</span></b> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> <br clear="none"> <b><span style="font-weight:bold">Sent:</span></b> Monday, November 16, 2015 2:30 AM<br clear="none"> <b><span style="font-weight:bold">Subject:</span></b> Re: [PSUBS-MAILIST] Pressure Test Chamber<br clear="none"> </font> </div> <div><br clear="none"><div><div><div style="color:#000;background-color:#fff;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:12px"><div><span>Hi alan,</span></div><div><span>My cylinder is very unusual because it is light weight for a crane. But yes, you leave the piston in, if it is double acting and either all of the rod or cut the excess off, I would leave it intact. I can either use water or air, normally I think you would fill with water for safety also to locate a leak in your test part. I use air because the cylinder is safe and rated. If you find a double acting cylinder, you can also remove the piston and just use the piston nut and washer to hold the rod in from pushing out. Then you can use the second port for filling with water while it vents out the opposite port. Then you just need a tee with gauge and valve. You can pressurize it with your scuba tank or a pressure washer. The scuba tanks make the most sense if you fill with water first so you displace all the air. You will need to make a small air chamber to go inside if your testing your penetrators. Just take a pipe threaded at both ends, screw a cap on one end and a fitting at the other that will except your penetrator. This way you have water pushing against the penetrator with air on the opposite side of the penetrator</span>. So long story, but try to find a double acting cylinder, either screw on top or tie rod type with four long bolts is also fine. Easy to do with no welding or machining.</div><div dir="ltr">Hank</div><div dir="ltr"><br clear="none"></div> <br clear="none"><div><br clear="none"><br clear="none"></div><div style="display:block"> <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:12px"> <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div><br clear="none"><br clear="none"></div><div><div dir="ltr"> <font size="2" face="Arial"> On Saturday, November 14, 2015 10:26 PM, Alan James via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> wrote:<br clear="none"> </font> </div> <br clear="none"><br clear="none"> <div><div><div><div style="color:#000;background-color:#fff;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"><div><span>Adam / Hank,</span></div><div><span>received Adam.</span></div><div><span>Hank how does your hydraulic cylinder test chamber work?</span></div><div><span>Have you left the piston & rod in it extended & then pressurize the cylinder with the piston?</span></div><div><span>Do you fill your pressure chamber with water?</span></div><div><span>Any details appreciated.</span></div><div><span>Thanks</span></div><div><span>Alan</span></div><br clear="none"> <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div><div dir="ltr"> <hr size="1"> <font size="2" face="Arial"> <b><span style="font-weight:bold">From:</span></b> Adam via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>><br clear="none"> <b><span style="font-weight:bold">To:</span></b> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> <br clear="none"> <b><span style="font-weight:bold">Sent:</span></b> Sunday, November 15, 2015 4:42 PM<br clear="none"> <b><span style="font-weight:bold">Subject:</span></b> Re: [PSUBS-MAILIST] Pressure Test Chamber<br clear="none"> </font> </div> <div><br clear="none"><div><div><div dir="ltr">Test</div><div><br clear="none"><div>On Sat, Nov 14, 2015 at 9:08 PM, Alan James via Personal_Submersibles <span dir="ltr"><<a rel="nofollow" shape="rect" href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>></span> wrote:<br clear="none"><blockquote style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><br clear="none"><br clear="none"></div><div><div><div style="color:#000;background-color:#fff;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"><div><span>Hank,</span></div><div dir="ltr"><span>that sounds a really good idea.</span></div><div dir="ltr">Will have a look for something suitable during the week.</div><div dir="ltr">Cheers Alan</div><br clear="none"> <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div dir="ltr"> <hr size="1"> <font face="Arial" size="2"> <b><span style="font-weight:bold">From:</span></b> hank pronk via Personal_Submersibles <<a rel="nofollow" shape="rect" href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>><span><br clear="none"> <b><span style="font-weight:bold">To:</span></b> Personal Submersibles General Discussion <<a rel="nofollow" shape="rect" href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> <br clear="none"> </span><b><span style="font-weight:bold">Sent:</span></b> Sunday, November 15, 2015 2:37 PM</font><div><div><br clear="none"> <b><span style="font-weight:bold">Subject:</span></b> Re: [PSUBS-MAILIST] Pressure Test Chamber<br clear="none"> </div></div> </div><div><div> <div><br clear="none"><div><div><div style="color:#000;background-color:#fff;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:12px"><div><span>Alan,</span></div><div><span>Just buy a hydraulic cylinder, works a charm and there is no welding plus it is rated.</span></div><div><span>Hank</span></div> <br clear="none"><div><br clear="none"><br clear="none"></div><div style="display:block"> <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:12px"> <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div><br clear="none"><br clear="none"></div><div><div dir="ltr"> <font face="Arial" size="2"> On Saturday, November 14, 2015 6:13 PM, Alan James via Personal_Submersibles <<a rel="nofollow" shape="rect" href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> wrote:<br clear="none"> </font> </div> <br clear="none"><br clear="none"> <div><div><div><div style="color:#000;background-color:#fff;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"><div><span>Thanks Hugh,</span></div><div dir="ltr">I am making up 8 lights (including navigational) & their connectors</div><div dir="ltr">+ thruster through hulls so will have a minimum of 29 items to test.</div><div dir="ltr">It would probably pay for me to have my own.</div><div dir="ltr">Do you want to sell your stuff? Otherwise I was going to head to a</div><div dir="ltr">pipe manufacturer & see what bits I could pick up.</div><div dir="ltr">Cheers Alan</div><br clear="none"> <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div><div dir="ltr"> <hr size="1"> <font face="Arial" size="2"> <b><span style="font-weight:bold">From:</span></b> Hugh Fulton via Personal_Submersibles <<a rel="nofollow" shape="rect" href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>><br clear="none"> <b><span style="font-weight:bold">To:</span></b> 'Personal Submersibles General Discussion' <<a rel="nofollow" shape="rect" href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> <br clear="none"> <b><span style="font-weight:bold">Sent:</span></b> Sunday, November 15, 2015 10:08 AM<br clear="none"> <b><span style="font-weight:bold">Subject:</span></b> Re: [PSUBS-MAILIST] Pressure Test Chamber<br clear="none"> </font> </div> <div><br clear="none"><div><div><div><div><span style="font-size:11.0pt">Alan,</span></div><div><span style="font-size:11.0pt">I have a deal for you.</span></div><div><span style="font-size:11.0pt">I have the cylinder, pump and gauges but need the flanges made etc.</span></div><div><span style="font-size:11.0pt">You can use it whenever but I get to keep it.</span></div><div><div><span style="font-size:11.0pt">Hugh</span><span lang="EN-NZ" style="font-size:8.0pt"></span></div><div><span lang="EN-NZ" style="font-size:11.0pt"> </span></div></div><div><span style="font-size:11.0pt"> </span></div><div><br clear="none"><br clear="none"></div><div><div><div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0cm 0cm 0cm"><div><b><span style="font-size:10.0pt">From:</span></b><span style="font-size:10.0pt"> Personal_Submersibles [mailto:<a rel="nofollow" shape="rect" href="mailto:personal_submersibles-bounces@psubs.org" target="_blank">personal_submersibles-bounces@psubs.org</a>] <b>On Behalf Of </b>Alan James via Personal_Submersibles<br clear="none"><b>Sent:</b> Saturday, 14 November 2015 5:37 p.m.<br clear="none"><b>To:</b> Personal Submersibles General Discussion<br clear="none"><b>Subject:</b> [PSUBS-MAILIST] Pressure Test Chamber</span></div></div></div><div> </div><div><div><div style="background:white"><span>Hi all,</span></div></div><div><div style="background:white"><span>I need to find or make a test chamber a minimum</span></div></div><div><div style="background:white"><span>of around 6" internal diameter & about 12" high.</span></div></div><div><div style="background:white"><span>I could go a lot larger than that if something was suitable.</span></div></div><div><div style="background:white"><span>I don't need to test above 400 psi.</span></div></div><div><div style="background:white"><span>Anything off the shelf that I could cannibalize?</span></div></div><div><div style="background:white"><span>Or any ideas on construction.</span></div></div><div><div style="background:white"><span>Cheers Alan</span></div></div></div></div></div></div></div><br clear="none"><div>_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a rel="nofollow" shape="rect" href="mailto:Personal_Submersibles@psubs.org" target="_blank">Personal_Submersibles@psubs.org</a><br clear="none"><a rel="nofollow" shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"></div><br clear="none"><br clear="none"></div></div> </div> </div> </div></div></div><br clear="none"><div>_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a 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