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        <div>Emile, </div><div>the DS4 looks good; I see they have a nitrox version that is suitable for 100% O2 (DIN only). </div><div>Alan</div><div><br></div><div><br></div>
        
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                    On Monday, March 15, 2021, 11:20:38 PM GMT+13, via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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                <div><div id="ydp98840745yiv8993751942"><div><div class="ydp98840745yiv8993751942WordSection1"><p class="ydp98840745yiv8993751942MsoNormal"><span>Alan,</span></p><p class="ydp98840745yiv8993751942MsoNormal"><span>  </span></p><p class="ydp98840745yiv8993751942MsoNormal"><span lang="EN-US">For now I have the best results with Apeks DS4 regulators. They don’t freeze either. I was asking for a possible mission to 400 M</span></p><p class="ydp98840745yiv8993751942MsoNormal"><span lang="EN-US">  </span></p><p class="ydp98840745yiv8993751942MsoNormal"><span lang="EN-US">Br, Emile</span></p><p class="ydp98840745yiv8993751942MsoNormal"><span lang="EN-US">  </span></p><div class="ydp98840745yiv8993751942yqt2769380585" id="ydp98840745yiv8993751942yqt87628"><div><div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm;"><p class="ydp98840745yiv8993751942MsoNormal"><b>Van:</b> Personal_Submersibles <personal_submersibles-bounces@psubs.org> <b>Namens </b>Alan James via Personal_Submersibles<br clear="none"><b>Verzonden:</b> dinsdag 16 februari 2021 23:06<br clear="none"><b>Aan:</b> via Personal_Submersibles <personal_submersibles@psubs.org><br clear="none"><b>Onderwerp:</b> Re: [PSUBS-MAILIST] first stage regulator</p></div></div><p class="ydp98840745yiv8993751942MsoNormal">  </p><div><div><p class="ydp98840745yiv8993751942MsoNormal"><span style="font-size:12.0pt;font-family:sans-serif;">Emile, </span></p></div><div><p class="ydp98840745yiv8993751942MsoNormal"><span style="font-size:12.0pt;font-family:sans-serif;">I would think the only limitation would be the pressure in your tank. Below 6000ft with a bottle filled to 3000psi, nothing would come out of it anyway. </span></p></div><div><p class="ydp98840745yiv8993751942MsoNormal"><span style="font-size:12.0pt;font-family:sans-serif;">Lots of different first stage designs; maybe find a diagram of your particular model and study it to be sure! </span></p></div><div><p class="ydp98840745yiv8993751942MsoNormal"><span style="font-size:12.0pt;font-family:sans-serif;">What are you thinking of using it for? </span></p></div><div><p class="ydp98840745yiv8993751942MsoNormal"><span style="font-size:12.0pt;font-family:sans-serif;">Alan</span></p></div><div><p class="ydp98840745yiv8993751942MsoNormal"><span style="font-size:12.0pt;font-family:sans-serif;">  </span></p></div><div><p class="ydp98840745yiv8993751942MsoNormal"><span style="font-size:12.0pt;font-family:sans-serif;">  </span></p></div><div><p class="ydp98840745yiv8993751942MsoNormal"><span style="font-size:12.0pt;font-family:sans-serif;">  </span></p></div><div id="ydp98840745yiv8993751942ydpccc8568byahoo_quoted_3672910110"><div><div><p class="ydp98840745yiv8993751942MsoNormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;">On Wednesday, February 17, 2021, 10:49:55 AM GMT+13, via Personal_Submersibles <<a shape="rect" href="mailto:personal_submersibles@psubs.org" rel="nofollow" target="_blank">personal_submersibles@psubs.org</a>> wrote: </span></p></div><div><p class="ydp98840745yiv8993751942MsoNormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;">  </span></p></div><div><p class="ydp98840745yiv8993751942MsoNormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;">  </span></p></div><div><div id="ydp98840745yiv8993751942ydpccc8568byiv4889935428"><div><div><p class="ydp98840745yiv8993751942ydpccc8568byiv4889935428msonormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;">Hi,</span></p><p class="ydp98840745yiv8993751942ydpccc8568byiv4889935428msonormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"> </span></p><p class="ydp98840745yiv8993751942ydpccc8568byiv4889935428msonormal"><span lang="EN-GB" style="font-size:10.0pt;font-family:sans-serif;color:#26282A;">Anyone knows till how deep you can use a first stage (Apeks) regulator? </span><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"></span></p><p class="ydp98840745yiv8993751942ydpccc8568byiv4889935428msonormal"><span lang="EN-GB" style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"> </span><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"></span></p><p class="ydp98840745yiv8993751942ydpccc8568byiv4889935428msonormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;">Emile D.L. van Essen</span></p><p class="ydp98840745yiv8993751942ydpccc8568byiv4889935428msonormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;"> </span></p></div></div></div><p class="ydp98840745yiv8993751942MsoNormal"><span style="font-size:10.0pt;font-family:sans-serif;color:#26282A;">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a shape="rect" href="mailto:Personal_Submersibles@psubs.org" rel="nofollow" target="_blank">Personal_Submersibles@psubs.org</a><br clear="none"><a shape="rect" href="http://www.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