<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div></div><div>Thanks Hugh! In the end I think I've found a way to reroute the tubing that will keep it simple and use only the ball valves. Will be implementing this and retesting in a week or two.</div><div><br></div><div>Best,</div><div><br></div><div>Alec</div><div><br>On Apr 18, 2017, at 4:39 PM, Hugh Fulton via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br><br></div><blockquote type="cite"><div><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><meta name="Generator" content="Microsoft Word 14 (filtered medium)"><!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
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</o:shapelayout></xml><![endif]--><div class="WordSection1"><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">James,<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">That blow off valve is operated by vacuum assisted by excess pressure (4psi or x ). It would be a cheap safety valve but can’t see it working for MBT s.<o:p></o:p></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Am I missing something? 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 [<a href="mailto:personal_submersibles-bounces@psubs.org">mailto:personal_submersibles-bounces@psubs.org</a>] <b>On Behalf Of </b>james cottrell via Personal_Submersibles<br><b>Sent:</b> Sunday, 16 April 2017 3:10 PM<br><b>To:</b> Personal Submersibles General Discussion<br><b>Subject:</b> Re: [PSUBS-MAILIST] actuated valves?<o:p></o:p></span></p></div></div><p class="MsoNormal"><o:p> </o:p></p><div><div id="yui_3_16_0_ym19_1_1492312093985_4194"><p class="MsoNormal" style="background:white"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:black">4 psi spring return pneumatic valve for turbo applications might be an option-<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1492312093985_4194"><p class="MsoNormal" style="background:white"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:black"><o:p> </o:p></span></p></div><div id="yui_3_16_0_ym19_1_1492312093985_4194"><p class="MsoNormal" style="background:white"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:black"><a href="http://www.ebay.com/itm/1-25mm-OD-Inlet-BOV-Blow-off-Valve-Turbo-Bypass-Brass-Piston-Black-/172619314317?hash=item2830e9b48d:g:zfMAAOSwEOxXP6-i&vxp=mtr">1" 25mm OD Inlet BOV Blow off Valve Turbo Bypass Brass Piston Black | eBay</a><br><br><o:p></o:p></span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:black"><o:p> </o:p></span></p></div><div id="enhancr2_a284f380-a6a4-4c86-25fd-82bcaa067e7c"><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0"><tbody><tr><td width="400" style="width:300.0pt;padding:0cm 0cm 0cm 0cm"><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="100%" style="width:100.0%"><tbody><tr style="height:150.0pt"><td valign="top" style="background:black;padding:0cm 0cm 0cm 0cm;height:150.0pt"><p class="MsoNormal"><!--[if gte vml 1]><v:rect id="_x0000_s1026" style='position:absolute;margin-left:0;margin-top:0;width:300pt;height:163.5pt;z-index:251657216' fillcolor="black" stroked="f">
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<![if !mso]><table cellpadding=0 cellspacing=0 width="100%"><tr><td><![endif]><div><table class=MsoNormalTable border=0 cellpadding=0 width="100%" style='width:100.0%;min-height:185px' id="yui_3_16_0_ym19_1_1492312093985_4317"><tr id="yui_3_16_0_ym19_1_1492312093985_4315"><td valign=top style='padding:11.25pt 0cm 0cm 11.25pt' id="yui_3_16_0_ym19_1_1492312093985_4314"><p class=MsoNormal><b><span style='font-size:13.5pt;color:white'>$ 15.75 </span></b><o:p></o:p></p></td><td valign=top style='padding:11.25pt 11.25pt 0cm 0cm'></td></tr></table><p class=MsoNormal><o:p> </o:p></p></div><![if !mso]></td></tr></table><![endif]></v:textbox>
</v:rect><![endif]--><!--[if !vml]--><span style="mso-ignore:vglayout;position:relative;z-index:251658240"><span style="position:absolute;left:0px;top:-18px;width:404px;height:222px"><image002.png></span></span><!--[endif]--><o:p></o:p></p></td></tr></tbody></table></td></tr><tr><td style="padding:0cm 0cm 0cm 0cm"><div align="center"><table class="MsoNormalTable" border="1" cellspacing="0" cellpadding="0" width="95%" style="width:95.0%;background:white;border:solid #E0E4E9 1.0pt;border-bottom:solid #0065D4 2.25pt;max-width:380px;z-index:2"><tbody><tr><td valign="top" style="border:none;padding:12.0pt 0cm 12.0pt 9.0pt"><p class="MsoNormal"><img border="0" height="32" id="_x0000_i1025" src="https://s.yimg.com/nq/storm/assets/enhancrV2/23/logos/ebay.png"><o:p></o:p></p></td><td width="99%" style="width:99.0%;border:none;padding:12.0pt 9.0pt 12.0pt 9.0pt"><h2 style="mso-margin-top-alt:0cm;margin-right:0cm;margin-bottom:3.0pt;margin-left:0cm;line-height:14.25pt;word-break:break-word"><span style="font-size:12.0pt;font-family:"Helvetica","sans-serif"">1" 25mm OD Inlet BOV Blow off Valve Turbo Bypass Brass Piston Black |...<o:p></o:p></span></h2><div><p class="MsoNormal" style="line-height:11.25pt"><span style="font-size:8.5pt;color:#999999">1" 25mm OD Inlet BOV Blow off Valve Turbo Bypass Brass Piston Black | eBay Motors, Parts & Accessories,...<o:p></o:p></span></p></div></td><td style="border:none;padding:12.0pt 9.0pt 12.0pt 0cm"></td></tr></tbody></table></div></td></tr></tbody></table></td></tr></tbody></table></div><div id="yui_3_16_0_ym19_1_1492312093985_4353"><p class="MsoNormal" style="background:white"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:black"><o:p> </o:p></span></p></div><div id="yui_3_16_0_ym19_1_1492312093985_4253"><p class="MsoNormal" style="margin-bottom:12.0pt;background:white"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:black"><o:p> </o:p></span></p></div><div id="yui_3_16_0_ym19_1_1492312093985_4301"><div id="yui_3_16_0_ym19_1_1492312093985_4300"><div id="yui_3_16_0_ym19_1_1492312093985_4299"><div id="yui_3_16_0_ym19_1_1492312093985_4298"><div class="MsoNormal" align="center" style="text-align:center;background:white"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><hr size="1" width="100%" align="center"></span></div><p class="MsoNormal" style="background:white"><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">From:</span></b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"> james cottrell via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br><b>To:</b> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br><b>Sent:</b> Saturday, April 15, 2017 12:45 PM<br><b>Subject:</b> Re: [PSUBS-MAILIST] actuated valves?</span><span style="font-family:helveticaneue;color:black"><o:p></o:p></span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-family:helveticaneue;color:black"><o:p> </o:p></span></p><div id="yiv1150046537"><div><div><div><p class="MsoNormal" style="background:white"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:black">Alec,<o:p></o:p></span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:black">You might try a Turbo blow off valve.<o:p></o:p></span></p></div><div><p class="MsoNormal" style="margin-bottom:12.0pt;background:white"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:black"><o:p> </o:p></span></p></div><div id="yiv1150046537yui_3_16_0_ym19_1_1492269432664_51899"><div id="yiv1150046537yui_3_16_0_ym19_1_1492269432664_51898"><div id="yiv1150046537yui_3_16_0_ym19_1_1492269432664_51897"><div id="yiv1150046537yqt13600"><div><div class="MsoNormal" align="center" style="text-align:center;background:white"><span style="font-family:helveticaneue;color:black"><hr size="1" width="100%" align="center"></span></div><p class="MsoNormal" style="background:white"><b><span style="font-family:helveticaneue;color:black">From:</span></b><span style="font-family:helveticaneue;color:black"> Alec Smyth via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br><b>To:</b> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br><b>Sent:</b> Saturday, April 15, 2017 8:13 AM<br><b>Subject:</b> [PSUBS-MAILIST] actuated valves?<o:p></o:p></span></p></div><div id="yiv1150046537yui_3_16_0_ym19_1_1492269432664_51896"><p class="MsoNormal" style="background:white"><span style="font-family:helveticaneue;color:black"><o:p> </o:p></span></p><div id="yiv1150046537"><div id="yiv1150046537yui_3_16_0_ym19_1_1492269432664_51901"><p class="MsoNormal" style="background:white"><span style="font-family:helveticaneue;color:black">Hi all,<o:p></o:p></span></p><div id="yiv1150046537yui_3_16_0_ym19_1_1492269432664_51903"><p class="MsoNormal" style="background:white"><span style="font-family:helveticaneue;color:black"><o:p> </o:p></span></p></div><div id="yiv1150046537yui_3_16_0_ym19_1_1492269432664_51905"><p class="MsoNormal" style="background:white"><span style="font-family:helveticaneue;color:black">I'm mulling over options for re-plumbing Shackleton's MBTs. I can go with re-positioned tubing or remotely actuated valves. In principle the tubing is easier, but I'm trying to think through all possibilities before deciding, and just thought of a new option. There's six tanks per side, and the tanks are small so it would be a challenge to put a mushroom valve inside each tank. Besides, that would be a dozen valves. However, I could also do just two valves per side, mounted outside and above the tanks, with very short hoses or tubes leading from three tanks to each valve. There is space, and because the valves would be outside the tanks I have a lot more freedom for the size or geometry of the valves. Maybe even normal ball valves actuated by a little air cylinder. This system would allow for fore-aft and side-to-side control, and would be highly resistant to list-induced water blocking. <o:p></o:p></span></p></div><div id="yiv1150046537yui_3_16_0_ym19_1_1492269432664_51907"><p class="MsoNormal" style="background:white"><span style="font-family:helveticaneue;color:black"><o:p> </o:p></span></p></div><div id="yiv1150046537yui_3_16_0_ym19_1_1492269432664_51909"><p class="MsoNormal" style="background:white"><span style="font-family:helveticaneue;color:black">Anyone have thoughts on the KISSest way to control valves? For example, something that could work with unregulated 3K psi air?<o:p></o:p></span></p></div><div id="yiv1150046537yui_3_16_0_ym19_1_1492269432664_51911"><p class="MsoNormal" style="background:white"><span style="font-family:helveticaneue;color:black"><o:p> </o:p></span></p></div><div id="yiv1150046537yui_3_16_0_ym19_1_1492269432664_51913"><p class="MsoNormal" style="background:white"><span style="font-family:helveticaneue;color:black"><o:p> </o:p></span></p></div><div id="yiv1150046537yui_3_16_0_ym19_1_1492269432664_51915"><p class="MsoNormal" style="background:white"><span style="font-family:helveticaneue;color:black">Thanks,<o:p></o:p></span></p></div><div id="yiv1150046537yui_3_16_0_ym19_1_1492269432664_51917"><p class="MsoNormal" style="background:white"><span style="font-family:helveticaneue;color:black"><br>Alec<o:p></o:p></span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-family:helveticaneue;color:black"><o:p> </o:p></span></p></div><div><p class="MsoNormal" style="background:white"><span style="font-family:helveticaneue;color:black"><o:p> </o:p></span></p></div></div></div><p class="MsoNormal" style="margin-bottom:12.0pt;background:white"><span style="font-family:helveticaneue;color:black">_______________________________________________<br>Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org" target="_blank">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></div></div><div id="yqt83676"><p class="MsoNormal" style="background:white"><span style="font-family:helveticaneue;color:black">_______________________________________________<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><o:p></o:p></span></p></div><p class="MsoNormal" style="margin-bottom:12.0pt;background:white"><span style="font-family:helveticaneue;color:black"><o:p> </o:p></span></p></div></div></div></div></div></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></body></html>