<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div></div><div>Rick,</div><div>the round solenoid in the picture I sent is 24V & has a 10mm stroke.</div><div>At the start of the stroke it exerts 3kg force & at the end 1.5kg.</div><div>With the 48V version (square one) you can't pull it apart once it closes</div><div>with just 12V. </div><div>The problem is they only work in one direction, so you are relying on </div><div>spring pressure for return. In your case where you are closing a valve </div><div>with a lever the return may be a problem. You could possibly use two</div><div>solenoids to operate one valve. </div><div>There are solenoid valves but they could corrode if seeing salt water.</div><div>If you go with a solenoid valve be careful as most use system pressure</div><div>to aid their opening. The ones that don't ( forget the terms) are generally</div><div>24V rather than 12V.</div><div>A better way might be a small linear actuator.</div><div>Alan</div><div><br>On 22/12/2018, at 5:14 PM, Rick Patton via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br><br></div><blockquote type="cite"><div><div dir="ltr">You guys got me thinking about these solenoid's but for a different purpose. I fabricated a cable/pulley system for opening and closing my VBT flood valve as it is under the floor boards and not in a convenient location on a K-350. Do you Solenoid guys happen to know about how much pressure a plunger can exert? That might be a great way to rotate the valve 90 degrees easily.<div>Rick </div></div><br><div class="gmail_quote"><div dir="ltr">On Fri, Dec 21, 2018 at 3:55 PM Alan via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto"><div></div><div>Jon,</div><div>I have bought a couple of solenoids 48V & 24V (not solenoid valves) that I </div><div>intend to experiment with. The idea being that I coat the wiring, housing &</div><div>plunger in resin & use it to directly actuate the ballast valve.</div><div>I bought the two below to get a rough idea of what gauge wire to use, how</div><div>large, what size plunger etc.</div><div>There is a limit as to how long you can operate them for due to heat, but a</div><div>ballast valve isn't open for long.</div><div>Alan</div><div><image1.JPG><br></div><div><br>On 22/12/2018, at 12:21 PM, Jon Wallace via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> wrote:<br><br></div><blockquote type="cite"><div><div style="color:rgb(0,0,0);background-color:rgb(255,255,255);font-family:"times new roman","new york",times,serif;font-size:16px"><div id="gmail-m_-7479006135256207554yui_3_16_0_ym19_1_1545430445731_19298"><br></div><div id="gmail-m_-7479006135256207554yui_3_16_0_ym19_1_1545430445731_19298" dir="ltr">Just curious, why pneumatic? There's a lot of plumbing involved, no? Is there no reasonable solenoid alternative? Manual alternative such as attaching a long rod, one end in the sub the other end to a gear in the mushroom housing, such that you can turn it from inside the cabin?</div><div class="gmail-m_-7479006135256207554qtdSeparateBR"><br><br></div><div class="gmail-m_-7479006135256207554yahoo_quoted" id="gmail-m_-7479006135256207554yui_3_16_0_ym19_1_1545430445731_19303" style="display:block"><div style="font-family:"times new roman","new york",times,serif;font-size:16px" id="gmail-m_-7479006135256207554yui_3_16_0_ym19_1_1545430445731_19302"><div style="font-family:HelveticaNeue,"Helvetica Neue",Helvetica,Arial,"Lucida Grande",sans-serif;font-size:16px" id="gmail-m_-7479006135256207554yui_3_16_0_ym19_1_1545430445731_19301"><div class="gmail-m_-7479006135256207554y_msg_container" id="gmail-m_-7479006135256207554yui_3_16_0_ym19_1_1545430445731_19313"><br><br></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" target="_blank">Personal_Submersibles@psubs.org</a></span><br><span><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a></span><br></div></blockquote></div>_______________________________________________<br>
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