<html><head></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_ym19_1_1478304449501_30706"><span id="yui_3_16_0_ym19_1_1478304449501_30707">Thanks Hugh, that's great information.</span></div><div id="yui_3_16_0_ym19_1_1478304449501_30521" dir="ltr"><span id="yui_3_16_0_ym19_1_1478304449501_30520">So if I specify a connection compatible with a SAE J-1926-1 7/16-20 UN port </span></div><div id="yui_3_16_0_ym19_1_1478304449501_30647" dir="ltr"><span>I should get there!</span></div><div dir="ltr"><span>Cheers Alan</span></div><div id="yui_3_16_0_ym19_1_1478304449501_30648" dir="ltr"><span></span> </div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1478304449501_30424"><br><br></div><div class="yahoo_quoted" id="yui_3_16_0_ym19_1_1478304449501_30420" style="display: block;"> <div id="yui_3_16_0_ym19_1_1478304449501_30419" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_ym19_1_1478304449501_30418" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_ym19_1_1478304449501_30417" dir="ltr"> <font id="yui_3_16_0_ym19_1_1478304449501_30416" face="Arial" size="2"> <hr size="1"> <b><span style="font-weight: bold;">From:</span></b> Hugh Fulton via Personal_Submersibles <personal_submersibles@psubs.org><br> <b><span style="font-weight: bold;">To:</span></b> 'Personal Submersibles General Discussion' <personal_submersibles@psubs.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Sunday, November 6, 2016 10:42 AM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] High Pressure Port Dimensions<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_ym19_1_1478304449501_30712"><br><div id="yiv1436184623"><style>#yiv1436184623 #yiv1436184623 --
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#yiv1436184623 </style><div id="yui_3_16_0_ym19_1_1478304449501_30711"><div class="yiv1436184623WordSection1" id="yui_3_16_0_ym19_1_1478304449501_30710"><div class="yiv1436184623MsoNormal" id="yui_3_16_0_ym19_1_1478304449501_30709"><span id="yui_3_16_0_ym19_1_1478304449501_30708" style="font-size: 11pt;">Alan, The thread lengths and specs are SAE J-1926-1. Ports on the regs are generally 3/8” . Female thread lengths for 3/8”, 7/16” ½” 9/16” are 10mm, 11.5, 11.5, 12.7 resp. The male threads are shorter. All in parker or Swagelok literature. Those ports are fine in the small sizes up to about 1-1/16”. Smaller sizes are good for over 6,000 psi and up to approx. 9,000 psi. in SS. Brass is not so good Think of it as a ratio of area to circumference. We don’t like doing burst tests on Threads of 1-5/16” as the thread stretches and then the o-ring pops out at around 20,000 psi, which negates the test. Generally 6 threads on most sizes is sufficient. </span></div><div class="yiv1436184623MsoNormal"><span style="font-size: 11pt;">Hugh </span></div><div class="yiv1436184623MsoNormal"><span style="font-size: 11pt;"> </span></div><div class="yiv1436184623yqt9876890149" id="yiv1436184623yqt52328"><div><div style="border-width: 1pt medium medium; border-style: solid none none; border-color: rgb(181, 196, 223) currentColor currentColor; padding: 3pt 0cm 0cm;"><div class="yiv1436184623MsoNormal"><b><span lang="EN-US" style="font-size: 10pt;">From:</span></b><span lang="EN-US" style="font-size: 10pt;"> Personal_Submersibles [mailto:personal_submersibles-bounces@psubs.org] <b>On Behalf Of </b>hank pronk via Personal_Submersibles<br clear="none"><b>Sent:</b> Sunday, 6 November 2016 1:17 AM<br clear="none"><b>To:</b> Personal Submersibles General Discussion<br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] High Pressure Port Dimensions</span></div></div></div><div class="yiv1436184623MsoNormal" id="yui_3_16_0_ym19_1_1478304449501_30736"> </div><div id="yui_3_16_0_ym19_1_1478304449501_30737"><div><div class="yiv1436184623MsoNormal" style="background: white;"><span style="font-size: 9pt;">Alan,</span></div></div><div><div class="yiv1436184623MsoNormal" style="background: white;"><span style="font-size: 9pt;">There must be a how many threads per mm to how much psi chart out there. You would think if the plug is 7.16 mm long, then that should be your bench mark.</span></div></div><div><div class="yiv1436184623MsoNormal" style="background: white;"><span style="font-size: 9pt;">Hank</span></div></div><div><div class="yiv1436184623MsoNormal" style="background: white; margin-bottom: 12pt;"><span style="font-size: 9pt;"> </span></div></div><div id="yui_3_16_0_ym19_1_1478304449501_30742"><div id="yui_3_16_0_ym19_1_1478304449501_30741"><div id="yui_3_16_0_ym19_1_1478304449501_30740"><div><div class="yiv1436184623MsoNormal" style="background: white;"><span style="font-size: 10pt;">On Friday, November 4, 2016 10:23 PM, Alan via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:</span><span></span></div></div><div class="yiv1436184623MsoNormal" style="background: white; margin-bottom: 12pt;"><span> </span></div><div id="yui_3_16_0_ym19_1_1478304449501_30739"><div class="yiv1436184623MsoNormal" id="yui_3_16_0_ym19_1_1478304449501_30738" style="background: white; margin-bottom: 12pt;"><span>I am still in the process of ordering some pressure transmitters that<br clear="none">will screw in to the high pressure port of a scuba tank. Have had a <br clear="none">number of quotes, & it looks like some manufacturers will do a limited<br clear="none">run with the non standard 7/16 UNF thread. I am not sure what to <br clear="none">specify with regard to thread length. Have measured 3 hp ports &<br clear="none">they are around 11.5mm deep. The depth gauge thread that screws <br clear="none">in to it is about 8.76mm long & the blank / plug that fits in the port is 7.16mm long.<br clear="none">Any transmitter thread length over the port depth will bottom out & not <br clear="none">be able to compress the o-ring which is on the pressure transmitter.<br clear="none">I was thinking of specifying 10mm but wondered if there was an industry <br clear="none">standard length. <br clear="none">Am nit picking a bit here but want to get it right, as others may want to<br clear="none">order the same product if it works well.<br clear="none">Regards Alan<br clear="none"><br clear="none"><br clear="none">Sent from my iPad<br clear="none">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a href="mailto:Personal_Submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="nofollow" shape="rect">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"><br clear="none"></span></div></div></div></div></div></div></div></div></div></div><br><div class="yqt9876890149" id="yqt40361">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a href="mailto:Personal_Submersibles@psubs.org" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" shape="rect">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"></div><br><br></div> </div> </div> </div></div></body></html>