<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_1_1442946927336_7329"><span>Hi James,</span></div><div dir="ltr" id="yui_3_16_0_1_1442946927336_7331"><span id="yui_3_16_0_1_1442946927336_7330">firstly, if you did go with the pr364, you need to buy the one with the relieving option.</span></div><div dir="ltr" id="yui_3_16_0_1_1442946927336_6840"><span id="yui_3_16_0_1_1442946927336_7328">This relieves any overpressure that you will experience as you ascend & it</span></div><div dir="ltr" id="yui_3_16_0_1_1442946927336_6839"><span>keeps the regulator at the set pressure above ambient.</span></div><div dir="ltr" id="yui_3_16_0_1_1442946927336_6812"><span id="yui_3_16_0_1_1442946927336_6838">You would have a first stage regulator either on the tank or on the line to the regulators</span></div><div dir="ltr" id="yui_3_16_0_1_1442946927336_6810"><span id="yui_3_16_0_1_1442946927336_6811">& that will give 130 psi above ambient. If you go to 500ft you will have 130 + 250 = 380psi</span></div><div dir="ltr" id="yui_3_16_0_1_1442946927336_6801"><span id="yui_3_16_0_1_1442946927336_6803">which is 80psi more than it is rated for. But as the housing is under external pressure, it</span></div><div dir="ltr" id="yui_3_16_0_1_1442946927336_6800"><span id="yui_3_16_0_1_1442946927336_6799">will only really see the 130psi above ambient.</span></div><div dir="ltr" id="yui_3_16_0_1_1442946927336_6800"><span id="yui_3_16_0_1_1442946927336_6975">Yes you could use a second stage regulator. I use octopus regulators on my ambient sub.</span></div><div dir="ltr" id="yui_3_16_0_1_1442946927336_6800"><span>They are cheaper & not so sensitive that they free-flow.</span></div><div dir="ltr" id="yui_3_16_0_1_1442946927336_6800"><span id="yui_3_16_0_1_1442946927336_7106">I place them as low as possible as, if they are mounted high they won't give an overpressure.</span></div><div dir="ltr" id="yui_3_16_0_1_1442946927336_6800"><span id="yui_3_16_0_1_1442946927336_7259">I also modified the exhaust valves by putting plastic tubes off them, so that the valve seals don't</span></div><div dir="ltr" id="yui_3_16_0_1_1442946927336_6800"><span id="yui_3_16_0_1_1442946927336_7285">have the oportunity of letting water in when they open. Another psubber had thought he was getting</span></div><div dir="ltr" id="yui_3_16_0_1_1442946927336_6800"><span id="yui_3_16_0_1_1442946927336_7604">a bit of water in the motor because of these valves.</span></div><div dir="ltr" id="yui_3_16_0_1_1442946927336_6800"><span id="yui_3_16_0_1_1442946927336_7425"> With the pr364 you can dial in an overpressure. Most commercial compensating devices I</span></div><div dir="ltr" id="yui_3_16_0_1_1442946927336_6800"><span id="yui_3_16_0_1_1442946927336_7481">have seen have an overpressure of about 4-5psi.</span></div><div dir="ltr" id="yui_3_16_0_1_1442946927336_6800"><span>Cheers Alan</span></div><div dir="ltr" id="yui_3_16_0_1_1442946927336_6800"><span><br></span></div><div dir="ltr" id="yui_3_16_0_1_1442946927336_6800"><span><br></span></div><div dir="ltr" id="yui_3_16_0_1_1442946927336_6800"><span><br></span></div><br> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1442946927336_6315"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1442946927336_6314"> <div dir="ltr" id="yui_3_16_0_1_1442946927336_6313"> <hr size="1" id="yui_3_16_0_1_1442946927336_6974"> <font size="2" face="Arial" id="yui_3_16_0_1_1442946927336_6312"> <b><span style="font-weight:bold;">From:</span></b> James Frankland 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> Wednesday, September 23, 2015 2:53 AM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] Sub hot water bottle.<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_1_1442946927336_6319"><br><div id="yiv4468918680"><div id="yui_3_16_0_1_1442946927336_6318"><div dir="ltr" id="yui_3_16_0_1_1442946927336_6317"><div id="yui_3_16_0_1_1442946927336_6696">Hi Alan,</div><div id="yui_3_16_0_1_1442946927336_6802">I was just looking at that regulator. It has a max inlet pressure of 20 bar. </div><div id="yui_3_16_0_1_1442946927336_7313"> </div><div id="yui_3_16_0_1_1442946927336_6417">Unless im missing something isn't a normal scuba regulator a better option?</div><div id="yui_3_16_0_1_1442946927336_6316"> </div><div id="yui_3_16_0_1_1442946927336_6423">James</div></div><div class="qtdSeparateBR"><br><br></div><div class="yiv4468918680yqt1362227911" id="yiv4468918680yqt26484"><div class="yiv4468918680gmail_extra" id="yui_3_16_0_1_1442946927336_6329"><br clear="none"><div class="yiv4468918680gmail_quote" id="yui_3_16_0_1_1442946927336_6328">On 22 September 2015 at 09:53, James Frankland <span dir="ltr" id="yui_3_16_0_1_1442946927336_6327"><<a rel="nofollow" shape="rect" ymailto="mailto:jamesf@guernseysubmarine.com" target="_blank" href="mailto:jamesf@guernseysubmarine.com" id="yui_3_16_0_1_1442946927336_6326">jamesf@guernseysubmarine.com</a>></span> wrote:<br clear="none"><blockquote class="yiv4468918680gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;" id="yui_3_16_0_1_1442946927336_6332"><div dir="ltr" id="yui_3_16_0_1_1442946927336_6331"><div id="yui_3_16_0_1_1442946927336_6330">Hi Alan,</div><div id="yui_3_16_0_1_1442946927336_6643"> </div><div id="yui_3_16_0_1_1442946927336_6651">Interesting idea. Looks good. I might put that on my list of winter modifications.</div><div id="yui_3_16_0_1_1442946927336_6424"> </div><div id="yui_3_16_0_1_1442946927336_7798">Agree, the water bottle looks a bit amateur, but I think it will be ok and i'll hide it out of the way. </div><span class="yiv4468918680HOEnZb"><font color="#888888"></font></span><div> </div><div>James</div></div><div class="yiv4468918680HOEnZb" id="yui_3_16_0_1_1442946927336_6432"><div class="yiv4468918680h5" id="yui_3_16_0_1_1442946927336_6431"><div class="yiv4468918680gmail_extra" id="yui_3_16_0_1_1442946927336_6430"><br clear="none"><div class="yiv4468918680gmail_quote" id="yui_3_16_0_1_1442946927336_6429">On 21 September 2015 at 21:05, Alan James via Personal_Submersibles <span dir="ltr" id="yui_3_16_0_1_1442946927336_7317"><<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org" id="yui_3_16_0_1_1442946927336_7316">personal_submersibles@psubs.org</a>></span> wrote:<br clear="none"><blockquote class="yiv4468918680gmail_quote" style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid;" id="yui_3_16_0_1_1442946927336_6428"><div id="yui_3_16_0_1_1442946927336_6427"><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);" id="yui_3_16_0_1_1442946927336_6426"><div><span>James,</span></div><div id="yui_3_16_0_1_1442946927336_6653"><span id="yui_3_16_0_1_1442946927336_6652">Cliff is using this regulator as a compensating device.</span></div><div dir="ltr"><span><a rel="nofollow" shape="rect" target="_blank" href="http://ph.parker.com/us/en/stainless-steel-pressure-regulator-pr354-pr364-series-miniature">http://ph.parker.com/us/en/stainless-steel-pressure-regulator-pr354-pr364-series-miniature</a><br clear="none"></span></div><div dir="ltr" id="yui_3_16_0_1_1442946927336_6425">I intend to use it also. You attach it to your air line & dial in your required overpressure.</div><div dir="ltr" id="yui_3_16_0_1_1442946927336_7319">It has a hole in the handle spindle that enables the regulator to keep the</div><div dir="ltr" id="yui_3_16_0_1_1442946927336_6453">set pressure above ambient & also exhaust any over pressure as you ascend.</div><div dir="ltr" id="yui_3_16_0_1_1442946927336_6433">The idea is to mount it with the handwheel facing down to avoid any water getting in the system,</div><div dir="ltr" id="yui_3_16_0_1_1442946927336_6488">& additionally as a caution run a tube down off it.</div><div dir="ltr" id="yui_3_16_0_1_1442946927336_7322">You can either fill your motor with oil; in which case any oil expansion can run up the length of</div><div dir="ltr" id="yui_3_16_0_1_1442946927336_6654">tubing from the regulator to the motor, or just air compensate.</div><div dir="ltr" id="yui_3_16_0_1_1442946927336_7321">Untried apart from one dive by Cliff.</div><div dir="ltr">Looks more proffesional than a hot water bottle:)</div><div dir="ltr">Cheers Alan</div><div dir="ltr"><br clear="none"></div><br clear="none"> <div style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"> <div style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"> <div dir="ltr"> <hr size="1"> <font face="Arial" size="2"> <b><span style="font-weight:bold;">From:</span></b> James Frankland via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><span><br clear="none"> <b><span style="font-weight:bold;">To:</span></b> Personal Submersibles General Discussion <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br clear="none"> </span><b><span style="font-weight:bold;">Sent:</span></b> Tuesday, September 22, 2015 1:31 AM<br clear="none"> <b><span style="font-weight:bold;">Subject:</span></b> [PSUBS-MAILIST] Sub hot water bottle.<br clear="none"> </font> </div> <div><div><div><br clear="none"><div><div dir="ltr"><div>This is my new bladder for the aft motor. The old one was relying on the fuel bulb to act as the bladder, but I had the should provide a much better bladder.</div><div><br clear="none">The small wheelbarrow inner tube was an alternative idea. </div><div> </div><div>Regards</div><div>James<img width="490" height="368" data-id="4de3a3ac-7155-1d8d-5fc4-c659aa968705"><br clear="none"></div></div></div><br clear="none"></div></div><span>_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" target="_blank" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a rel="nofollow" shape="rect" target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"><br clear="none"><br clear="none"></span></div> </div> </div> </div></div><br clear="none">_______________________________________________<br clear="none">
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