<html><head></head><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_ym19_1_1473382334845_4501"><span>Hank, </span></div><div id="yui_3_16_0_ym19_1_1473382334845_4504"><span id="yui_3_16_0_ym19_1_1473382334845_4503">I wonder if that's what they do on the Deep Flight submersibles.</span></div><div id="yui_3_16_0_ym19_1_1473382334845_4506" dir="ltr"><span id="yui_3_16_0_ym19_1_1473382334845_4505">On their specs they say...• Urethane spring balanced access hatch with overpressure relief.</span></div><div id="yui_3_16_0_ym19_1_1473382334845_4597" dir="ltr"><span>Alan</span></div><div id="yui_3_16_0_ym19_1_1473382334845_4540" dir="ltr"><span id="yui_3_16_0_ym19_1_1473382334845_4554"><img id="yui_3_16_0_ym19_1_1473382334845_4552" src="http://www.deepflight.com/wp-content/uploads/2015/06/pressurehull-e1433620574483.jpg" data-id="cf1b941b-6e15-4904-7d6f-b6366c4be4ec"></span></div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1473382334845_4492"><br><br></div><div class="yahoo_quoted" id="yui_3_16_0_ym19_1_1473382334845_4531" style="display: block;"> <div id="yui_3_16_0_ym19_1_1473382334845_4530" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_ym19_1_1473382334845_4529" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_ym19_1_1473382334845_4533" dir="ltr"> <font id="yui_3_16_0_ym19_1_1473382334845_4532" face="Arial" size="2"> <hr size="1" id="yui_3_16_0_ym19_1_1473382334845_4538"> <b><span style="font-weight: bold;">From:</span></b> hank pronk via Personal_Submersibles <personal_submersibles@psubs.org><br> <b><span style="font-weight: bold;">To:</span></b> "personal_submersibles@psubs.org" <personal_submersibles@psubs.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Friday, September 9, 2016 12:12 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> [PSUBS-MAILIST] Op valve<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_ym19_1_1473382334845_4528"><br><div id="yiv8961132810"><div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);"><div id="yiv8961132810yui_3_16_0_ym19_1_1473379831696_2913">I have been reading the Mantis submersible spec sheet, and the aft entry dome is also the Op valve. The dome is spring loaded to allow it to open a wee bit in the event of an OP. Cool!</div><div id="yiv8961132810yui_3_16_0_ym19_1_1473379831696_2913">Hank</div></div></div></div><br>_______________________________________________<br>Personal_Submersibles mailing list<br><a id="yui_3_16_0_ym19_1_1473382334845_4527" href="mailto:Personal_Submersibles@psubs.org" ymailto="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><br><br><br></div> </div> </div> </div></div></body></html>