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		<id>https://www.designingbuildings.co.uk/w/index.php?action=history&amp;feed=atom&amp;title=Two-port_valve</id>
		<title>Two-port valve - Revision history</title>
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		<updated>2026-05-06T22:03:23Z</updated>
		<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://www.designingbuildings.co.uk/w/index.php?title=Two-port_valve&amp;diff=207334&amp;oldid=prev</id>
		<title>Designing Buildings at 07:06, 28 June 2021</title>
		<link rel="alternate" type="text/html" href="https://www.designingbuildings.co.uk/w/index.php?title=Two-port_valve&amp;diff=207334&amp;oldid=prev"/>
				<updated>2021-06-28T07:06:00Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: white; color:black;&quot;&gt;
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		&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;← Older revision&lt;/td&gt;
		&lt;td colspan='2' style=&quot;background-color: white; color:black;&quot;&gt;Revision as of 07:06, 28 June 2021&lt;/td&gt;
		&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;color: red; font-weight: bold; text-decoration: none;&quot;&gt;[[File:Two-port valve.jpg]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;background: #cfc; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;color: red; 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 class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[https://www.bsria.com/uk/product/oBKRqD/illustrated_guide_to_mechanical_building_services_3rd_edition_bg_312017_a15d25e1/ The Illustrated Guide to Mechanical Building Services, Third Edition (BG 31/2017)], by David Bleicher, published by BSRIA in 2017, suggests that a two-port valve is: ‘A motorised valve which can be either on/off or modulating and is sometimes known as a zone valve. Pictured is a small two-port valve used on a domestic heating system to direct water to the hot water cylinder. The metal box on top of the valve is the actuator – an electric motor that moves the valve to the required position in response to signals from a control system.’&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;div&gt;[https://www.bsria.com/uk/product/oBKRqD/illustrated_guide_to_mechanical_building_services_3rd_edition_bg_312017_a15d25e1/ The Illustrated Guide to Mechanical Building Services, Third Edition (BG 31/2017)], by David Bleicher, published by BSRIA in 2017, suggests that a two-port valve is: ‘A motorised valve which can be either on/off or modulating and is sometimes known as a zone valve. Pictured is a small two-port valve used on a domestic heating system to direct water to the hot water cylinder. The metal box on top of the valve is the actuator – an electric motor that moves the valve to the required position in response to signals from a control system.’&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background: #eee; color:black; font-size: smaller;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Designing Buildings</name></author>	</entry>

	<entry>
		<id>https://www.designingbuildings.co.uk/w/index.php?title=Two-port_valve&amp;diff=207330&amp;oldid=prev</id>
		<title>Designing Buildings: Created page with &quot;[https://www.bsria.com/uk/product/oBKRqD/illustrated_guide_to_mechanical_building_services_3rd_edition_bg_312017_a15d25e1/ The Illustrated Guide to Mechanical Building Services, ...&quot;</title>
		<link rel="alternate" type="text/html" href="https://www.designingbuildings.co.uk/w/index.php?title=Two-port_valve&amp;diff=207330&amp;oldid=prev"/>
				<updated>2021-06-28T07:03:14Z</updated>
		
		<summary type="html">&lt;p&gt;Created page with &amp;quot;[https://www.bsria.com/uk/product/oBKRqD/illustrated_guide_to_mechanical_building_services_3rd_edition_bg_312017_a15d25e1/ The Illustrated Guide to Mechanical Building Services, ...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;[https://www.bsria.com/uk/product/oBKRqD/illustrated_guide_to_mechanical_building_services_3rd_edition_bg_312017_a15d25e1/ The Illustrated Guide to Mechanical Building Services, Third Edition (BG 31/2017)], by David Bleicher, published by BSRIA in 2017, suggests that a two-port valve is: ‘A motorised valve which can be either on/off or modulating and is sometimes known as a zone valve. Pictured is a small two-port valve used on a domestic heating system to direct water to the hot water cylinder. The metal box on top of the valve is the actuator – an electric motor that moves the valve to the required position in response to signals from a control system.’&lt;br /&gt;
&lt;br /&gt;
--[[User:BSRIA|BSRIA]]&lt;br /&gt;
&lt;br /&gt;
= Related articles on Designing Buildings Wiki =&lt;br /&gt;
&lt;br /&gt;
* Ball valve.&lt;br /&gt;
* BSRIA articles on Designing Buildings Wiki.&lt;br /&gt;
* BSRIA definitions.&lt;br /&gt;
* BSRIA.&lt;br /&gt;
* Butterfly valve.&lt;br /&gt;
* Differential pressure control valve.&lt;br /&gt;
* Four port valve.&lt;br /&gt;
* Gate valve.&lt;br /&gt;
* Pressure independent control valve.&lt;br /&gt;
* Three-port valve.&lt;br /&gt;
* Types of valve.&lt;br /&gt;
* Valve.&lt;br /&gt;
&lt;br /&gt;
[[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:Definitions]] [[Category:Products_/_components]]&lt;/div&gt;</summary>
		<author><name>Designing Buildings</name></author>	</entry>

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