new vaporstat+gauges+pigtail, ok to elevate / extend?

Binnacle

Just snagged a L608A (mercury switch, more accurate than J) Vaporstat and now am planning the install.



Ordered piping and gauges based on the 11/7/2012 2:23pm post by Rod to <a href="http://www.heatinghelp.com/forum-thread/143164/Noise-again">http://www.heatinghelp.com/forum-thread/143164/Noise-again</a> using the referenced PDF <a href="http://www.heatinghelp.com/files/posts/14911/Low%20Pressure%20Gauge%20Piping%20-%20%20Bill%20of%20Materials.pdf">http://www.heatinghelp.com/files/posts/14911/Low%20Pressure%20Gauge%20Piping%20-%20%20Bill%20of%20Materials.pdf</a>.



Is there an problem with adding a six-inch nipple plus coupling to extend the entire assembly so the Vaporstat and gauges are just above the top of the boiler housing?



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more details below, comments welcome!



skipping the bottom elbow nipple from the PDF and planning on attaching directly to the top of the LWCO



Substituted Wika 0-20oz low pressure and 30"Hg-0-30PSI liquid filled high pressure gauge, and planning to add a Ray Porous Snubber between the pigtail and 4-way cross fitting.  Links:



<a href="http://www.valworx.com/product/low-pressure-gauge-25-0-20-ozsq-in">http://www.valworx.com/product/low-pressure-gauge-25-0-20-ozsq-in</a>

<a href="http://www.valworx.com/product/compound-gauge-25-30-hg-0-30psi-liquid-filled">http://www.valworx.com/product/compound-gauge-25-30-hg-0-30psi-liquid-filled</a>

<a href="http://www.valworx.com/product/ray-porous-snubber-14-npt-brass-a">http://www.valworx.com/product/ray-porous-snubber-14-npt-brass-a</a>



replacing the sight-glass too



Boiler is 1961 Weil McLain E-9-B, distant predecessor of the EG-65.



photo attached

Jamie Hall

No problem at all

in fact, it's not a bad idea.  Those things don't like to get wet, and extending it higher like that will help -- and won't make any difference in the pressure it senses.



Some folks say you don't have to fill the pigtail with water when you  install it -- but I would recommend that you do.  That will ensure that the equipment won't see steam either, and that always helps.