<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">Now that looks really presentable! But I’m not understanding the issue with the low pressure side. Why would that need protecting, is it not open to the sea?<div><br></div><div>Thanks,</div><div>Alec<br><div><br></div><div><br><br><div dir="ltr"><br>On Dec 21, 2018, at 5:56 PM, hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br><br></div><blockquote type="cite"><div dir="ltr"><div class="ydpf2a8e6eeyahoo-style-wrap" style="font-family: Helvetica Neue, Helvetica, Arial, sans-serif; font-size: 13px;"><div></div>
<div>Hello fellow sub nerds. After do some total destruction testing of my prototype vent valve - I have decided to replace the plastic top with an aluminum disk. Also I had to pressurize the air cylinder until it exploded before the piston seal would leak. I was hoping it had a weaker seal so that the cylinder would be self protecting from water pressure. The test shows that a compensation system needs to be added to protect the low pressure side of the piston. No problem - I will mount a second small air cylinder in the air line to act a compensator. I now have three valves built and ready to install.</div><div>Hank</div><div><br></div>
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<div><b>From:</b> hank pronk <<a href="mailto:hanker_20032000@yahoo.ca">hanker_20032000@yahoo.ca</a>></div><div><b>To:</b> hank pronk <<a href="mailto:hanker_20032000@yahoo.ca">hanker_20032000@yahoo.ca</a>></div><div><b>Sent:</b> Friday, December 21, 2018, 3:49:20 PM MST</div><div><b>Subject:</b> </div><div><br></div>
<div><div dir="ltr"><br></div><div dir="ltr"><br></div><br><br>Sent from my iPhone</div>
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