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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hank, I think you just found the accelerator pedal on the car. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>All yours, Sean.<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><p class=MsoNormal><span lang=EN-NZ style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hugh<o:p></o:p></span></p></div><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 style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Personal_Submersibles [mailto:personal_submersibles-bounces@psubs.org] <b>On Behalf Of </b>hank pronk via Personal_Submersibles<br><b>Sent:</b> Saturday, 23 April 2016 5:38 a.m.<br><b>To:</b> Personal Submersibles General Discussion<br><b>Subject:</b> [PSUBS-MAILIST] head strength<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_1461346333504_2586"><p class=MsoNormal style='background:white'><span style='font-size:9.0pt;font-family:"helveticaneue","serif";color:black'>Hi Sean,<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1461346333504_2586"><p class=MsoNormal style='background:white'><span style='font-size:9.0pt;font-family:"helveticaneue","serif";color:black'>I have been studying the head maximum pressure chart on Psubs and found that the pressure rating increases the same amount proportionately with thickness.<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1461346333504_2586"><p class=MsoNormal style='background:white'><span style='font-size:9.0pt;font-family:"helveticaneue","serif";color:black'>Is there a limit to this? <o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1461346333504_2586"><p class=MsoNormal style='background:white'><span style='font-size:9.0pt;font-family:"helveticaneue","serif";color:black'>Thank you<o:p></o:p></span></p></div><div id="yui_3_16_0_ym19_1_1461346333504_2586"><p class=MsoNormal style='background:white'><span style='font-size:9.0pt;font-family:"helveticaneue","serif";color:black'>Hank<o:p></o:p></span></p></div></div></div></body></html>