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OK, let's go with the<span> <span>¼</span> NPT. If there is an issue, we will find it during testing.</span></div>
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<span>Thanks,</span></div>
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<span>Bob</span></div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Brian Eng <beng@jlab.org><br>
<b>Sent:</b> Thursday, February 8, 2024 2:52 PM<br>
<b>To:</b> Bob Miller <rmiller@jlab.org><br>
<b>Cc:</b> Marc Mcmullen <mcmullen@jlab.org>; Marc Mcmullen via dsg-hallb_gas <dsg-hallb_gas@jlab.org><br>
<b>Subject:</b> Re: [dsg-hallb_gas] Solenoid Valve</font>
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<div style="line-break:after-white-space">That was one of the initial ones we were going to use, before finding even lower power ones. However, there is enough current capacity on the cRIO module to handle a 11.6W coil if need be. The main thing is that these
will be held mostly open the whole time so it’d be nice if we could get one with a lower power draw. Also it seems like it’s easier to find the smaller valves with connectors instead of conduit for the electrical connection.
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<div>So if the larger valve is a requirement we can use it, I just figured with these low flow rates the sizing wasn't so critical. Just let Marc know which you’d like to use.</div>
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<div>On Feb 8, 2024, at 2:00 PM, Bob Miller <rmiller@jlab.org> wrote:</div>
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Hi Brian,</div>
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Is this one acceptable, or is the power draw too high at 11.6 W?</div>
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If this one is no good, then we will have to settle for the<span> <span>¼</span> NPT.</span></div>
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-Bob</div>
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<span style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt"><a href="https://www.grainger.com/product/REDHAT-Solenoid-Valve-1-2-in-Pipe-5LE98" id="LPlnk569935">https://www.grainger.com/product/REDHAT-Solenoid-Valve-1-2-in-Pipe-5LE98</a></span></div>
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<font face="Calibri, sans-serif" style="font-size:11pt"><b>From:</b><span class="x_Apple-converted-space"> </span>Brian Eng <beng@jlab.org><br>
<b>Sent:</b><span class="x_Apple-converted-space"> </span>Thursday, February 8, 2024 1:48 PM<br>
<b>To:</b><span class="x_Apple-converted-space"> </span>Marc Mcmullen <mcmullen@jlab.org><br>
<b>Cc:</b><span class="x_Apple-converted-space"> </span>Bob Miller <rmiller@jlab.org>; Marc Mcmullen via dsg-hallb_gas <dsg-hallb_gas@jlab.org><br>
<b>Subject:</b><span class="x_Apple-converted-space"> </span>Re: [dsg-hallb_gas] Solenoid Valve</font>
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Hi Bob,
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<div>For the MFCs we ordered them with welded on 1/2” Swagelok compression fittings.</div>
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<div>The potential issue I see with the solenoid valve is that for the larger size pipes is that (at least so far) they have a minimum operating pressure differential, whereas the smaller sizes don’t.</div>
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<div>Is there any reason we couldn’t go with a 1/4” NPT fitting on the solenoid valve and just use adapters to 1/2” compression? Which is what we were planning on using with the MFCs initially. There’s some even lower power Asco valves/coils if that is okay.</div>
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<div>On Feb 8, 2024, at 1:32 PM, Marc Mcmullen via dsg-hallb_gas <dsg-hallb_gas@jlab.org> wrote:</div>
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Ok Bob,</div>
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We will look into it.</div>
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Marc<br>
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<font face="Calibri, sans-serif" style="font-size:11pt"><b>From:</b><span class="x_x_Apple-converted-space"> </span>Bob Miller <<a href="mailto:rmiller@jlab.org">rmiller@jlab.org</a>><br>
<b>Sent:</b><span class="x_x_Apple-converted-space"> </span>Thursday, February 8, 2024 1:22 PM<br>
<b>To:</b><span class="x_x_Apple-converted-space"> </span>Marc Mcmullen <<a href="mailto:mcmullen@jlab.org">mcmullen@jlab.org</a>><br>
<b>Subject:</b><span class="x_x_Apple-converted-space"> </span>Re: Solenoid Valve</font>
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Hi Marc,</div>
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I would prefer a 3/8 or ½ NPT size so it will match the MFC and the other components.</div>
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The fan that I tested is a little small, so I was planning on testing some others when we have the system put together. My thought was that if a fan does not work, then we could always use a 120 V diaphragm pump left over from the old DC system - we should
have 6 of those pumps left.</div>
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-Bob</div>
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<div id="x_x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt"><b>From:</b><span class="x_x_Apple-converted-space"> </span>Marc Mcmullen <mcmullen@jlab.org><br>
<b>Sent:</b><span class="x_x_Apple-converted-space"> </span>Thursday, February 8, 2024 12:12 PM<br>
<b>To:</b><span class="x_x_Apple-converted-space"> </span>Bob Miller <rmiller@jlab.org><br>
<b>Cc:</b><span class="x_x_Apple-converted-space"> </span>Marc Mcmullen via dsg-hallb_gas <dsg-hallb_gas@jlab.org><br>
<b>Subject:</b><span class="x_x_Apple-converted-space"> </span>Solenoid Valve</font>
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Hi Bob,</div>
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<div class="x_x_x_x_elementToProof"><span style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt">For the SV, ASCO p/n<span class="x_x_Apple-converted-space"> </span><a href="https://www.grainger.com/product/ASCO-Solenoid-Valve-1-8-in-Pipe-4ELC1" id="LPlnk945309" title="https://www.grainger.com/product/ASCO-Solenoid-Valve-1-8-in-Pipe-4ELC1">U8256B045V</a> would
be better for the controls. Its 24 VDC and low coil control power (6.9 W) means we can control it directly from the cRIO channel, instead of an intermediate relay controlling power to the coil. Let us know if this will work for the system.</span></div>
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<div class="x_x_x_x_elementToProof"><span style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt">Also, can you give more information on the exhaust fan. We need to look at a data sheet to see what is involved
in controlling it.</span></div>
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<div class="x_x_x_x_elementToProof"><span style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt">-Marc<br>
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<span style="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; text-decoration:none; float:none; display:inline!important">dsg-hallb_gas
mailing list</span><br style="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; text-decoration:none">
<span style="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; text-decoration:none; float:none; display:inline!important">dsg-hallb_gas@jlab.org</span><br style="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; text-decoration:none">
<span style="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; text-decoration:none; float:none; display:inline!important">https://mailman.jlab.org/mailman/listinfo/dsg-hallb_gas</span></div>
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