<font color='black' size='3' face='Arial, Helvetica, sans-serif'>Lot of trouble when your topside crew could just use a shop vacuum on a spare penetrator--pull the vacuum, close the valve, set the seats, and let it hold for a leak check--sounds like a good boat ramp <span style="font-size: 12pt;">pre-dive prep to me</span>
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<div>Vance</div>
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<div style="font-family:helvetica,arial;font-size:10pt;color:black">-----Original Message-----<br>
From: Brian Cox via Personal_Submersibles <personal_submersibles@psubs.org><br>
To: PSubs <personal_submersibles@psubs.org><br>
Sent: Wed, Apr 17, 2019 9:12 pm<br>
Subject: [PSUBS-MAILIST] pressure pump<br>
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<div style="font-family:Arial, sans-serif;font-size:10pt;"><font size="2" style="font-family:Arial, sans-serif;">Hi All, </font>
<div><font size="2"><font face="Arial, sans-serif"> I have this little pressure pump for my internal ballast and I'm wondering if I could use it to pull a vacuum on my sub. I was thinking it would be nice to do before I submerge, to seal the hatch. The pump I have is a 100W 12volt pump that puts out 150psi and a flow of 8L / min. Would I need to expel water to pull the vacuum? My internal ballast is about 5 1/2 gallons . Not sure if the pump would pump air efficiently.</font></font></div>
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<div><font size="2"><font face="Arial, sans-serif">Brian</font></font></div>
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