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	<id>http://ibls.org/mediawiki/index.php?action=history&amp;feed=atom&amp;title=Water_column</id>
	<title>Water column - Revision history</title>
	<link rel="self" type="application/atom+xml" href="http://ibls.org/mediawiki/index.php?action=history&amp;feed=atom&amp;title=Water_column"/>
	<link rel="alternate" type="text/html" href="http://ibls.org/mediawiki/index.php?title=Water_column&amp;action=history"/>
	<updated>2026-04-09T12:28:25Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
	<generator>MediaWiki 1.39.2</generator>
	<entry>
		<id>http://ibls.org/mediawiki/index.php?title=Water_column&amp;diff=17781&amp;oldid=prev</id>
		<title>Dnevil at 14:02, 11 January 2024</title>
		<link rel="alternate" type="text/html" href="http://ibls.org/mediawiki/index.php?title=Water_column&amp;diff=17781&amp;oldid=prev"/>
		<updated>2024-01-11T14:02:30Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 09:02, 11 January 2024&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l4&quot;&gt;Line 4:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 4:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[http://www.chaski.org/homemachinist/viewtopic.php?f=8&amp;amp;t=92599&amp;amp;start=24 Curtis F. defined [[Water column]] on &amp;lt;i&amp;gt;Chaski.org&amp;lt;/i&amp;gt;]:&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[http://www.chaski.org/homemachinist/viewtopic.php?f=8&amp;amp;t=92599&amp;amp;start=24 Curtis F. defined [[Water column]] on &amp;lt;i&amp;gt;Chaski.org&amp;lt;/i&amp;gt;]:&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;: [[Water column|Water Columns]] are great things for increasing the accuracy of the [[Water gauge|Water Glass &amp;amp; Water Gauges]]. The water around the Firebox is boiling rather violently (think of a &amp;quot;rolling boil&amp;quot; in a cooking pot). Pipes fitted directly into the Boiler Shell and Back Head around the firebox have this boiling action passing right across the &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;their &lt;/del&gt;ends which can cause surges and suctions in the pipe which in turn will make the water in the Water Gauge &amp;quot;bob&amp;quot; up and down. A [[Water column]] acts as a buffer from these surges and such and will give a more accurate reading in the glass. Though they do take up more room in the cab, and are an extra bit of plumbing.  &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;: [[Water column|Water Columns]] are great things for increasing the accuracy of the [[Water gauge|Water Glass &amp;amp; Water Gauges]]. The water around the Firebox is boiling rather violently (think of a &amp;quot;rolling boil&amp;quot; in a cooking pot). Pipes fitted directly into the Boiler Shell and Back Head around the firebox have this boiling action passing right across the ends &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;of the pipe fittings &lt;/ins&gt;which can cause surges and suctions in the pipe which in turn will make the water in the Water Gauge &amp;quot;bob&amp;quot; up and down. A [[Water column]] acts as a buffer from these surges and such and will give a more accurate reading in the glass. Though they do take up more room in the cab, and are an extra bit of plumbing.  &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[File:Gage Glass with Tri-cocks Dave Sclavi.jpg|thumb|center|300px|[[Water gauge]] with [[Tri-cock|Tri-cocks]] mounted on the [[Water column]].]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[File:Gage Glass with Tri-cocks Dave Sclavi.jpg|thumb|center|300px|[[Water gauge]] with [[Tri-cock|Tri-cocks]] mounted on the [[Water column]].]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;== See Also ==&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[Tri-cock]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;== External Links ==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;== External Links ==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* [http://www.chaski.org/homemachinist/viewtopic.php?f=8&amp;amp;t=92599 &amp;quot;Try &amp;#039;Tri&amp;#039; cocks?&amp;quot;, &amp;lt;i&amp;gt;Chaski.org&amp;lt;/i&amp;gt;]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* [http://www.chaski.org/homemachinist/viewtopic.php?f=8&amp;amp;t=92599 &amp;quot;Try &amp;#039;Tri&amp;#039; cocks?&amp;quot;, &amp;lt;i&amp;gt;Chaski.org&amp;lt;/i&amp;gt;]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Dnevil</name></author>
	</entry>
	<entry>
		<id>http://ibls.org/mediawiki/index.php?title=Water_column&amp;diff=9015&amp;oldid=prev</id>
		<title>Dnevil: Created page with &quot;Category:Definitions Category:Steam Locomotive Parts  [http://www.chaski.org/homemachinist/viewtopic.php?f=8&amp;t=92599&amp;start=24 Curtis F. defined Water column on &lt;i&gt;...&quot;</title>
		<link rel="alternate" type="text/html" href="http://ibls.org/mediawiki/index.php?title=Water_column&amp;diff=9015&amp;oldid=prev"/>
		<updated>2016-04-05T17:03:09Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;&lt;a href=&quot;/mediawiki/index.php?title=Category:Definitions&quot; title=&quot;Category:Definitions&quot;&gt;Category:Definitions&lt;/a&gt; &lt;a href=&quot;/mediawiki/index.php?title=Category:Steam_Locomotive_Parts&quot; title=&quot;Category:Steam Locomotive Parts&quot;&gt;Category:Steam Locomotive Parts&lt;/a&gt;  [http://www.chaski.org/homemachinist/viewtopic.php?f=8&amp;amp;t=92599&amp;amp;start=24 Curtis F. defined &lt;a href=&quot;/mediawiki/index.php?title=Water_column&quot; title=&quot;Water column&quot;&gt;Water column&lt;/a&gt; on &amp;lt;i&amp;gt;...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;[[Category:Definitions]]&lt;br /&gt;
[[Category:Steam Locomotive Parts]]&lt;br /&gt;
&lt;br /&gt;
[http://www.chaski.org/homemachinist/viewtopic.php?f=8&amp;amp;t=92599&amp;amp;start=24 Curtis F. defined [[Water column]] on &amp;lt;i&amp;gt;Chaski.org&amp;lt;/i&amp;gt;]:&lt;br /&gt;
&lt;br /&gt;
: [[Water column|Water Columns]] are great things for increasing the accuracy of the [[Water gauge|Water Glass &amp;amp; Water Gauges]]. The water around the Firebox is boiling rather violently (think of a &amp;quot;rolling boil&amp;quot; in a cooking pot). Pipes fitted directly into the Boiler Shell and Back Head around the firebox have this boiling action passing right across the their ends which can cause surges and suctions in the pipe which in turn will make the water in the Water Gauge &amp;quot;bob&amp;quot; up and down. A [[Water column]] acts as a buffer from these surges and such and will give a more accurate reading in the glass. Though they do take up more room in the cab, and are an extra bit of plumbing. &lt;br /&gt;
&lt;br /&gt;
[[File:Gage Glass with Tri-cocks Dave Sclavi.jpg|thumb|center|300px|[[Water gauge]] with [[Tri-cock|Tri-cocks]] mounted on the [[Water column]].]]&lt;br /&gt;
&lt;br /&gt;
== External Links ==&lt;br /&gt;
&lt;br /&gt;
* [http://www.chaski.org/homemachinist/viewtopic.php?f=8&amp;amp;t=92599 &amp;quot;Try &amp;#039;Tri&amp;#039; cocks?&amp;quot;, &amp;lt;i&amp;gt;Chaski.org&amp;lt;/i&amp;gt;]&lt;/div&gt;</summary>
		<author><name>Dnevil</name></author>
	</entry>
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