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			<title>Green Building Forum - Is a deaerator needed for well-pump?</title>
			<lastBuildDate>Wed, 03 Jun 2026 05:02:03 +0100</lastBuildDate>
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		<title>Is a deaerator needed for well-pump?</title>
		<link>https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14280&amp;Focus=240962#Comment_240962</link>
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		<pubDate>Thu, 19 May 2016 21:37:13 +0100</pubDate>
		<author>crosbie</author>
		<description>
			<![CDATA[I'm planning to install a self-priming electric pump (with pressure regulator & expansion vessel) to suck water up from a well (10foot down or so). However, given occasional long periods of non-use, I'm wondering if there's a possibility of the pump passing any amount of air, e.g. into the expansion vessel (bottom entry above the pump). <br /><br />Does one usually need a deaerator (preceding the expansion vessel), or is that taken care of by the self-priming pump?]]>
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		<title>Is a deaerator needed for well-pump?</title>
		<link>https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14280&amp;Focus=240964#Comment_240964</link>
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		<pubDate>Thu, 19 May 2016 22:00:39 +0100</pubDate>
		<author>tony</author>
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			<![CDATA[Not needed , I can't see that it would matter if air went in there.]]>
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