<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div><span></span></div><div><div></div><div>Hi Hank,</div><div><br></div><div>The kind Sean is referring to is recognizable by two little metal pegs in the regulator yoke, and it seals with a rubberized flat washer. Well, although that's the standard one I have to say I've found it to be the least reliable seal ever devised. May I suggest a reg with a CGA-540 instead? You can get pediatric regulators with those on eBay (new) for about $20, and adapters from CGA-540 to NPT are readily available.</div><div><br></div><div>Best,</div><div><br></div><div>Alec</div><div><br>On Jan 10, 2017, at 7:58 PM, Sean T. Stevenson via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br><br></div><blockquote type="cite"><div><p dir="ltr">Standard medical oxygen is CGA-870.</p>
<p dir="ltr">Sean<br>
</p>
<br><br><div class="gmail_quote">On January 10, 2017 3:42:28 PM MST, hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12px"><div id="yui_3_16_0_ym19_1_1484087934751_2855">Hi all,</div><div id="yui_3_16_0_ym19_1_1484087934751_2855" dir="ltr">I lost a valve that goes in Elementary 3000 and I need to replace it. The valve is an oxygen shut off valve that a paediatric regulator fits on. I can steal one off a medical oxygen tank but I built the sub to take a valve with 1\4 pipe male fitting. I can't find one because I don't know what it is called?</div><div id="yui_3_16_0_ym19_1_1484087934751_2855" dir="ltr">Hank</div></div><p style="margin-top: 2.5em; margin-bottom: 1em; border-bottom: 1px solid #000"></p><pre class="k9mail"><hr><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">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br></pre></blockquote></div></div></blockquote><blockquote type="cite"><div><span>_______________________________________________</span><br><span>Personal_Submersibles mailing list</span><br><span><a href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a></span><br><span><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a></span><br></div></blockquote></div></body></html>