<DIV style="font-family:Arial, sans-serif; font-size:10pt;"><DIV>Hank, What about one of these ?</DIV><DIV> </DIV><DIV><A href="http://www.catpumps.com/products/pumps-stainless-steel-316SS-duplex-corrosion-resistant.asp">http://www.catpumps.com/products/pumps-stainless-steel-316SS-duplex-corrosion-resistant.asp</A></DIV><DIV> </DIV><DIV>Brian<BR><BR>--- personal_submersibles@psubs.org wrote:<BR><BR>From: Stephen Fordyce via Personal_Submersibles <personal_submersibles@psubs.org><BR>To: Personal Submersibles General Discussion <personal_submersibles@psubs.org><BR>Subject: Re: [PSUBS-MAILIST] hand pump<BR>Date: Fri, 8 Apr 2016 11:35:55 +1000<BR><BR></DIV><DIV dir="ltr"><DIV>Hi Hank,</DIV><DIV>I reckon a hydraulic bottle or lever jack is something to start with, and you'll struggle to get a hand pump that will do the sort of pressures you want (ie. most applications for air are too low pressure, for hydraulics are higher pressure, and not heaps in between).</DIV><DIV><BR></DIV><DIV>But then the capacity of the hydraulic hand pump will be tiny and as was mentioned, it's steel. Might still be a good starting point for freshwater use regardless, or to reverse engineer and make a stainless one.</DIV><DIV><BR></DIV><DIV>Here's a thought experiment that may be useful:</DIV><DIV>If you have 1L of water that you want to move from inside the sub (1atm) to outside (31atm at 300m water depth), that's equivalent in required energy to pulling up a 1L bucket from a 300m deep well. That's quite a bit of manual effort just for 1L. If it's 10L, well, screw doing that manually I say :)</DIV><DIV><BR></DIV><DIV>Cheers,</DIV><DIV>Steve</DIV></DIV><DIV><BR><DIV>On Fri, Apr 8, 2016 at 11:16 AM, hank pronk via Personal_Submersibles <SPAN dir="ltr"><<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>></SPAN> wrote:<BR><BLOCKQUOTE 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;"><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><SPAN>Alan,</SPAN></DIV><DIV dir="ltr"><SPAN>I need full depth pressure rating so I can sink fast without thrusters then pump out some water at depth to go </SPAN>neutral. I can't wast air like Gamma because I have no onboard compressor. </DIV><SPAN><FONT color="#888888"><DIV dir="ltr">Hank</DIV></FONT></SPAN><DIV><DIV> <DIV><BR><BR></DIV><DIV style="display: block;"> <DIV style="font-family: HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif; font-size: 12px;"> <DIV style="font-family: HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif; font-size: 16px;"> <DIV dir="ltr"><FONT face="Arial" size="2"> On Thursday, April 7, 2016 5:42 PM, Alan James via Personal_Submersibles <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>> wrote:<BR></FONT></DIV> <BR><BR> <DIV><DIV><DIV><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);"><DIV><SPAN>Hank,</SPAN></DIV><DIV><SPAN>why not use an electric pump used on boats & have valves to operate</SPAN></DIV><DIV><SPAN>various other functions. They are reasonably small, 12V & built for marine conditions.</SPAN></DIV><DIV><SPAN>Can't recall what psi they go up to, but saw some rated 130 psi.</SPAN></DIV><DIV><SPAN>Cheers Alan</SPAN></DIV><DIV><BR><BR></DIV><DIV style="display: block;"> <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><DIV dir="ltr"> <FONT face="Arial" size="2"> </FONT><HR size="1"> <B><SPAN style="font-weight: bold;">From:</SPAN></B> Sean T. Stevenson via Personal_Submersibles <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>><BR> <B><SPAN style="font-weight: bold;">To:</SPAN></B> Personal Submersibles General Discussion <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>> <BR> <B><SPAN style="font-weight: bold;">Sent:</SPAN></B> Friday, April 8, 2016 11:18 AM<BR> <B><SPAN style="font-weight: bold;">Subject:</SPAN></B> Re: [PSUBS-MAILIST] hand pump<BR> </DIV> <DIV><BR><DIV><DIV><DIV dir="ltr">I use these at work sometimes:</DIV>
<DIV dir="ltr"><A href="http://www.enerpac.com/en-us/industrial-tools/hydraulic-pumps-and-valves/hydraulic-manual-pumps-0">http://www.enerpac.com/en-us/industrial-tools/hydraulic-pumps-and-valves/hydraulic-manual-pumps-0</A></DIV>
<DIV dir="ltr">Don't know what they cost though.</DIV>
<DIV dir="ltr">Sean<BR>
</DIV>
<BR><BR><DIV>On April 7, 2016 5:03:15 PM MDT, hank pronk via Personal_Submersibles <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>> wrote:<BLOCKQUOTE style="margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex; border-left-color: rgb(204, 204, 204); border-left-width: 1px; border-left-style: solid;">
<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>Hi All,</DIV><DIV dir="ltr">I am looking for a hand pump to remove water from my trim tank. It will work like a DW. I will empty the air out of the mbt and then flood a small plastic tank inside the sub. Any ideas?</DIV><DIV dir="ltr">Hank</DIV></DIV></DIV><DIV style="margin-top: 2.5em; margin-bottom: 1em; border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"></DIV><PRE></PRE><HR><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">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</A><BR></BLOCKQUOTE></DIV></DIV></DIV><BR><DIV>_______________________________________________<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">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</A><BR></DIV><BR><BR></DIV></DIV> </DIV> </DIV> </DIV></DIV></DIV></DIV><BR><DIV>_______________________________________________<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">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</A><BR></DIV><BR><BR></DIV> </DIV> </DIV> </DIV></DIV></DIV></DIV></DIV><BR>_______________________________________________<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">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</A><BR>
<BR></BLOCKQUOTE></DIV><BR></DIV>
_______________________________________________
Personal_Submersibles mailing list
<A href="/eonapps/ft/wm/page/compose?send_to=Personal_Submersibles%40psubs.org">Personal_Submersibles@psubs.org</A>
<A href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</A>
</DIV>