<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><span></span></div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1482978871116_5920">Hank,</div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1482978871116_5913">yes it has a hole down the middle of the threaded fitting.</div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1482978871116_6031" dir="ltr">I only have 10mm of thread. I could machine a few mm off the end but still</div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1482978871116_6075" dir="ltr">wouldn't have a flat area to squash the o-ring against. The female fitting is slightly</div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1482978871116_6172" dir="ltr">tapered initially, & the o-ring is meant to fit in to this taper.</div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1482978871116_6173" dir="ltr">If I put a nut on as a spacer, the internal face of the o-ring would be against the thread,</div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1482978871116_6174" dir="ltr">& high pressure air could leak down between the thread & nut.</div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1482978871116_6175" dir="ltr">Alan</div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1482978871116_6074" dir="ltr"><br><br></div><div class="yahoo_quoted" id="yui_3_16_0_ym19_1_1482978871116_5939" style="display: block;"> <div id="yui_3_16_0_ym19_1_1482978871116_5938" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_ym19_1_1482978871116_5937" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_ym19_1_1482978871116_5936" dir="ltr"> <font id="yui_3_16_0_ym19_1_1482978871116_5935" face="Arial" size="2"> <hr size="1" id="yui_3_16_0_ym19_1_1482978871116_5940"> <b><span style="font-weight: bold;">From:</span></b> hank pronk 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> Thursday, December 29, 2016 3:15 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] Pressure Transducer<br> </font> </div> <div class="y_msg_container"><br><div id="yiv6908166486"><div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);"><div><span>Alan,</span></div><div dir="ltr"><span>I assume the threaded shaft is just a means of attaching it with a hole in the middle. If so, file it shorter, put a nut on the tread first and the nut will fix the end of the tread when you remove it.</span></div><div id="yiv6908166486yui_3_16_0_ym19_1_1482977512882_5789" dir="ltr"><span>Hank</span></div> <div class="yiv6908166486qtdSeparateBR"><br clear="none"><br clear="none"></div><div class="yiv6908166486yahoo_quoted" 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 class="yiv6908166486yqt0072243765" id="yiv6908166486yqt03159"><div dir="ltr"><font face="Arial" size="2"> On Wednesday, December 28, 2016 6:47 PM, Alan James via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<br clear="none"></font></div> <br clear="none"><br clear="none"> <div class="yiv6908166486y_msg_container"><div id="yiv6908166486"><div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);"><div id="yiv6908166486yui_3_16_0_ym19_1_1482974612554_2406"> Just received my 6 pressure transducers from China.</div><div id="yiv6908166486yui_3_16_0_ym19_1_1482974612554_2407">These were tailor made for me to fit in to the high pressure port</div><div id="yiv6908166486yui_3_16_0_ym19_1_1482974612554_2463" dir="ltr">of my first stage regulator; So rather than have high pressure air</div><div id="yiv6908166486yui_3_16_0_ym19_1_1482974612554_2451" dir="ltr">& oxygen coming through the hull wall, I just have wires.</div><div id="yiv6908166486yui_3_16_0_ym19_1_1482974612554_2450" dir="ltr"> Unfortunately it looks like they have got it wrong. They have a conical</div><div id="yiv6908166486yui_3_16_0_ym19_1_1482974612554_2715" dir="ltr">portion at the base of the male thread that makes it impossible to seal</div><div id="yiv6908166486yui_3_16_0_ym19_1_1482974612554_2716" dir="ltr">with an O-ring. I specified 10mm for thread & shank, but the 3mm extra </div><div id="yiv6908166486yui_3_16_0_ym19_1_1482974612554_2766" dir="ltr">on the conical portion means the flat faces of the pressure transmitter & </div><div id="yiv6908166486yui_3_16_0_ym19_1_1482974612554_2770" dir="ltr">regulator can't meet. Other than that it looks ideal for potting the wires.</div><div id="yiv6908166486yui_3_16_0_ym19_1_1482974612554_3221" dir="ltr"> Any suggestions for a fix on this, other than sending them back?</div><div id="yiv6908166486yui_3_16_0_ym19_1_1482974612554_2856" dir="ltr">I could possibly turn the conical portion down & stack washes under the</div><div id="yiv6908166486yui_3_16_0_ym19_1_1482974612554_3222" dir="ltr">o-ring. The fit was also a bit sloppy, but so was the original plug that was</div><div id="yiv6908166486yui_3_16_0_ym19_1_1482974612554_3246" dir="ltr">in this high pressure port. Not sure if this is normal or not.</div><div id="yiv6908166486yui_3_16_0_ym19_1_1482974612554_3247" dir="ltr">See attached photos, thanks.</div><div id="yiv6908166486yui_3_16_0_ym19_1_1482974612554_3248" dir="ltr">Alan</div></div></div></div><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"><br clear="none"></div></div> </div> </div> </div></div></div></div><br><div class="yqt0072243765" id="yqt75529">_______________________________________________<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>