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</o:shapelayout></xml><![endif]--></head><body lang=EN-NZ link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>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. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hugh <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Personal_Submersibles [mailto:personal_submersibles-bounces@psubs.org] <b>On Behalf Of </b>hank pronk via Personal_Submersibles<br><b>Sent:</b> Sunday, 6 November 2016 1:17 AM<br><b>To:</b> Personal Submersibles General Discussion<br><b>Subject:</b> Re: [PSUBS-MAILIST] High Pressure Port Dimensions<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal style='background:white'><span style='font-size:9.0pt;font-family:"helveticaneue","serif";color:black'>Alan,<o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-size:9.0pt;font-family:"helveticaneue","serif";color:black'>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.<o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-size:9.0pt;font-family:"helveticaneue","serif";color:black'>Hank<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt;background:white'><span style='font-size:9.0pt;font-family:"helveticaneue","serif";color:black'><o:p> </o:p></span></p></div><div><div><div><div><p class=MsoNormal style='background:white'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>On Friday, November 4, 2016 10:23 PM, Alan via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:</span><span style='font-family:"helveticaneue","serif";color:black'><o:p></o:p></span></p></div><p class=MsoNormal style='margin-bottom:12.0pt;background:white'><span style='font-family:"helveticaneue","serif";color:black'><o:p> </o:p></span></p><div><p class=MsoNormal style='margin-bottom:12.0pt;background:white'><span style='font-family:"helveticaneue","serif";color:black'>I am still in the process of ordering some pressure transmitters that<br>will screw in to the high pressure port of a scuba tank. Have had a <br>number of quotes, & it looks like some manufacturers will do a limited<br>run with the non standard 7/16 UNF thread. I am not sure what to <br>specify with regard to thread length. Have measured 3 hp ports &<br>they are around 11.5mm deep. The depth gauge thread that screws <br>in to it is about 8.76mm long & the blank / plug that fits in the port is 7.16mm long.<br>Any transmitter thread length over the port depth will bottom out & not <br>be able to compress the o-ring which is on the pressure transmitter.<br>I was thinking of specifying 10mm but wondered if there was an industry <br>standard length. <br>Am nit picking a bit here but want to get it right, as others may want to<br>order the same product if it works well.<br>Regards Alan<br><br><br>Sent from my iPad<br>_______________________________________________<br>Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br><br><o:p></o:p></span></p></div></div></div></div></div></div></body></html>