<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div><blockquote type="cite"><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px;"><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;">Keep in mind that if you use nitrogen cylinders from their 2400 psig pressure (as delivered) and use them down to just over 500-750 or 1500 psig for one application that requires high pressure, you can then move that cylinder to another application and use it down to the normal return pressure of ~250 psig or thereabouts. Although the high pressure requirement is an inefficient use of a nitrogen cylinder, you can move the cylinder to a lower pressure requirement application and use up the balance.</span></div><div><div style="font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt;"><br></div><div id="Signature" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><table cellpadding="0" cellspacing="0" style="width: 600px; border-collapse: collapse; border-spacing: 0px; box-sizing: border-box;"><tbody><tr><td style="padding-bottom: 10px;"><span style="font-family: calibri, candara, segoe, "segoe ui", optima, arial, sans-serif; font-size: 14.6667px; color: rgb(36, 36, 50);"><b>David Wolff</b></span><div style="font-size: 12px;">Wolff Engineering</div><div style="font-size: 12px;">Wolff_Eng@icloud.com</div><div style="font-size: 12px;">860-604-3282</div></td></tr></tbody></table></div><div id="appendonsend" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"></div><hr tabindex="-1" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; display: inline-block; width: 1226.953125px;"><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;"></span><div id="divRplyFwdMsg" dir="ltr" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><font face="Calibri, sans-serif" style="font-size: 11pt;"><b>From:</b><span class="Apple-converted-space"> </span>labnetwork <<a href="mailto:labnetwork-bounces@mtl.mit.edu">labnetwork-bounces@mtl.mit.edu</a>> on behalf of Dennis Schweiger <<a href="mailto:schweig@umich.edu">schweig@umich.edu</a>><br><b>Sent:</b><span class="Apple-converted-space"> </span>Thursday, August 7, 2025 11:05 AM<br><b>To:</b><span class="Apple-converted-space"> </span>Travis Venables <<a href="mailto:venables@seas.upenn.edu">venables@seas.upenn.edu</a>><br><b>Cc:</b><span class="Apple-converted-space"> </span>Fab Network <<a href="mailto:labnetwork@mtl.mit.edu">labnetwork@mtl.mit.edu</a>><br><b>Subject:</b><span class="Apple-converted-space"> </span>Re: [labnetwork] N2 Pressure Builder</font><div> </div></div><div style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div dir="ltr"><div dir="ltr"><div><div class="x_gmail_default" style="font-family: arial, sans-serif;">Travis,</div><div class="x_gmail_default" style="font-family: arial, sans-serif;"><br></div><div class="x_gmail_default" style="font-family: arial, sans-serif;">Good morning. Here at UofMichigan, we were using a pressure booster (see attached photo) for a nano-imprinter application where we needed 1500PSI N2. This worked ok, and we used a cylinder as the storage tank so that we had some volume. However after having to rebuild this pressure builder unit twice in the span of 12 months (bad seals), it became easier to just use a cylinder of N2 gas, and swap the cylinders out as needed.</div><div class="x_gmail_default" style="font-family: arial, sans-serif;"><br></div><div class="x_gmail_default" style="font-family: arial, sans-serif;">Haskel makes some good stuff, when I was looking to do 15,000PSI Helium testing, but I've never actually worked with any of their equipment.</div><div class="x_gmail_default" style="font-family: arial, sans-serif;"><br></div><div class="x_gmail_default" style="font-family: arial, sans-serif;">Thanks,</div><br clear="all"></div><div><div dir="ltr" class="x_gmail_signature"><div>Dennis<span class="x_gmail_default" style="font-family: arial, sans-serif;"><span class="Apple-converted-space"> </span>Schweiger</span></div><div><span class="x_gmail_default" style="font-family: arial, sans-serif;">University of Michigan/LNF</span></div><div><span class="x_gmail_default" style="font-family: arial, sans-serif;">Facilities</span></div><div> </div><div>734.647.2055 Ofc<br></div></div></div><br></div><br><div class="x_gmail_quote x_gmail_quote_container"><div dir="ltr" class="x_gmail_attr">On Wed, Aug 6, 2025 at 11:40 AM Travis Venables <<a href="mailto:venables@seas.upenn.edu">venables@seas.upenn.edu</a>> wrote:<br></div><blockquote class="x_gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left-width: 1px; border-left-style: solid; border-left-color: rgb(204, 204, 204); padding-left: 1ex;"><div dir="ltr"><div>Hello everyone,</div><div><br></div><div>Here at QNF we have a need to bring our house N2 pressure (sitting at 100psi) up to 500-750psi for a Nanonex NX2600 Nanoimprint tool. We currently utilize a Maximator system which is controlled pneumatically with house CDA. We are having a lot of issues with o-rings drying up and needing regular regreasing which becomes labor intensive. I am curious what everyone uses for N2 pressure builders in their facilities. Thanks!</div><span class="x_gmail_signature_prefix">--<span class="Apple-converted-space"> </span></span><br><div dir="ltr" class="x_gmail_signature"><div dir="ltr">Travis Venables<div><br></div><div>Lead Cleanroom Equipment Engineer</div><div>Quattrone Nanofabrication Facility</div><div>University of Pennsylvania</div><div><a href="https://www.nano.upenn.edu/" originalsrc="https://www.nano.upenn.edu/" target="_blank">https://www.nano.upenn.edu</a></div><div>P: 215-898-1787</div><div><br></div><div><img width="200" height="70" src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXe66pb_bj7n0vXky5r9uEf3y5sMz4yFV2HK-lOuGGMzj3VS6ybtG41AGZcUidgjZH61GUaGnR38EWIiqL3J-TsS9TxolLE--_h8K79Lk-dgYMHSjcBvHUy-zL7bWnKmfmJklE7i?key=OpK1PovMbdplDTzml6yQgugX"></div></div></div></div>_______________________________________________<br>labnetwork mailing list<br><a href="mailto:labnetwork@mtl.mit.edu" target="_blank">labnetwork@mtl.mit.edu</a><br><a href="https://mtl.mit.edu/mailman/listinfo.cgi/labnetwork" originalsrc="https://mtl.mit.edu/mailman/listinfo.cgi/labnetwork" rel="noreferrer" target="_blank">https://mtl.mit.edu/mailman/listinfo.cgi/labnetwork</a></blockquote></div></div></div></div></blockquote></div><br></body></html>