<div dir="ltr"><div><div>Hi Drew,<br><br></div>We have similar issue and what we doing is simple and with no cost. We just putting <span id="gmail-result_box" class="gmail-short_text" lang="en"><span class="gmail-">towel</span></span> around the noisy valve.<br><br></div>Best, <br></div><br><div class="gmail_quote"><div dir="ltr">On Tue, Jul 31, 2018 at 2:00 PM <<a href="mailto:3dem-request@ncmir.ucsd.edu">3dem-request@ncmir.ucsd.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Send 3dem mailing list submissions to<br>
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Today's Topics:<br>
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1. Quieting a noisy LN2 tank pressure relief valve? (Drew Gingerich)<br>
2. Re: Quieting a noisy LN2 tank pressure relief valve?<br>
(Drew Gingerich)<br>
<br>
<br>
----------------------------------------------------------------------<br>
<br>
Message: 1<br>
Date: Mon, 30 Jul 2018 19:28:46 +0000<br>
From: Drew Gingerich <<a href="mailto:gingerid@ohsu.edu" target="_blank">gingerid@ohsu.edu</a>><br>
To: "<a href="mailto:3dem@ncmir.ucsd.edu" target="_blank">3dem@ncmir.ucsd.edu</a>" <<a href="mailto:3dem@ncmir.ucsd.edu" target="_blank">3dem@ncmir.ucsd.edu</a>><br>
Subject: [3dem] Quieting a noisy LN2 tank pressure relief valve?<br>
Message-ID:<br>
<<a href="mailto:8EBCAFB04D3316488F9AF8BEF7CDF4D7011F33FF4D@EXMB10.ohsu.edu" target="_blank">8EBCAFB04D3316488F9AF8BEF7CDF4D7011F33FF4D@EXMB10.ohsu.edu</a>><br>
Content-Type: text/plain; charset="iso-8859-1"<br>
<br>
Hello,<br>
<br>
Does anyone have experience and/or recommendations for using a muffling/silencing attachment to control noise levels of a pressure relief valve?<br>
<br>
We have a 50L LN2 tank with a very noisy pressure relief valve (24 psi limit) that's in the same room as the control station for our microscope. When the valve opens it's both startling and loud enough to hurt our ears, so we're searching for ways to make it quieter.<br>
<br>
Thank you for your help,<br>
<br>
Drew Gingerich<br>
<br>
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Message: 2<br>
Date: Mon, 30 Jul 2018 20:55:39 +0000<br>
From: Drew Gingerich <<a href="mailto:gingerid@ohsu.edu" target="_blank">gingerid@ohsu.edu</a>><br>
To: "<a href="mailto:3dem@ncmir.ucsd.edu" target="_blank">3dem@ncmir.ucsd.edu</a>" <<a href="mailto:3dem@ncmir.ucsd.edu" target="_blank">3dem@ncmir.ucsd.edu</a>><br>
Subject: Re: [3dem] Quieting a noisy LN2 tank pressure relief valve?<br>
Message-ID:<br>
<<a href="mailto:8EBCAFB04D3316488F9AF8BEF7CDF4D7011F33FF70@EXMB10.ohsu.edu" target="_blank">8EBCAFB04D3316488F9AF8BEF7CDF4D7011F33FF70@EXMB10.ohsu.edu</a>><br>
Content-Type: text/plain; charset="iso-8859-1"<br>
<br>
Hi everyone,<br>
<br>
Thank you for the answers already given. I think I should provide a bit more information:<br>
<br>
We have a Titan, the LN2 tank, and the control station all in the same room (perhaps not ideal, but everything works fine). We receive the tanks from a company, so we're not in control of their filling procedure or tank/valve quality.<br>
<br>
We are considering some sort of muffler attachment because we're looking for an in-place solution, but we're interested in people's experiences and recommendations before trying this out.<br>
<br>
Sincerely,<br>
<br>
Drew Gingerich<br>
________________________________<br>
From: Drew Gingerich<br>
Sent: Monday, July 30, 2018 12:28 PM<br>
To: <a href="mailto:3dem@ncmir.ucsd.edu" target="_blank">3dem@ncmir.ucsd.edu</a><br>
Subject: Quieting a noisy LN2 tank pressure relief valve?<br>
<br>
Hello,<br>
<br>
Does anyone have experience and/or recommendations for using a muffling/silencing attachment to control noise levels of a pressure relief valve?<br>
<br>
We have a 50L LN2 tank with a very noisy pressure relief valve (24 psi limit) that's in the same room as the control station for our microscope. When the valve opens it's both startling and loud enough to hurt our ears, so we're searching for ways to make it quieter.<br>
<br>
Thank you for your help,<br>
<br>
Drew Gingerich<br>
<br>
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End of 3dem Digest, Vol 131, Issue 37<br>
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</blockquote></div><br clear="all"><br>-- <br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div style="background-color:rgb(255,255,255)" dir="ltr"><div dir="ltr" style="font-size:12.8px"><span style="font-size:12.8px">________________________________</span><font size="2"><br></font></div><font style="background-color:rgb(255,255,0)" size="2"></font><div dir="ltr"><font size="2"><span style="background-color:rgb(255,255,255)">Elad Binshtein, Ph.D.</span></font></div><div dir="ltr"><font size="2">Cryo EM specialist - staff scientist<br style="background-color:rgb(255,255,255)"><span style="background-color:rgb(255,255,255)">Center for Structure Biology (CSB)</span><br>MCN Room 1207<br style="background-color:rgb(255,255,255)"><span style="background-color:rgb(255,255,255)">Vanderbilt University</span><br style="background-color:rgb(255,255,255)"><span style="background-color:rgb(255,255,255)">Nashville, TN</span><br>Office: +1-615-322-4671<br style="background-color:rgb(255,255,255)"><span style="background-color:rgb(255,255,255)">Mobile: <span><span><span><span>+1-615-481-4408</span><span dir="ltr"><span dir="ltr"><span><span></span></span></span></span></span></span></span></span><span style="background-color:rgb(255,255,0)"><span></span></span><br><a href="https://www.linkedin.com/in/elad-binshtein-6bb89428/" target="_blank">https://www.linkedin.com/in/elad-binshtein-6bb89428/</a></font></div><font style="background-color:rgb(255,255,0)" size="2"><span style="background-color:rgb(255,255,255)">E-Mail: </span><a style="background-color:rgb(255,255,255)" href="mailto:eladbi@gmail.com" target="_blank">elad.binshtein@vanderbilt.edu</a></font></div><div><span style="font-size:12.8px">________________________________</span><br></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div>