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	<title>Surface Production Facility &#187; Centrifugal Pumps Bearings-Seals-Wear-Rings</title>
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	<description>Oil and Gas Production Facility Design</description>
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		<title>Wear Rings</title>
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		<pubDate>Fri, 11 Sep 2009 23:24:05 +0000</pubDate>
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				<category><![CDATA[Centrifugal Pumps Bearings-Seals-Wear-Rings]]></category>
		<category><![CDATA[Wear Rings]]></category>

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		<description><![CDATA[




These are easily renewable leakage seals between the impeller or shaft and casing designed to prevent leakage from high pressure to low pressure areas. They require a difference in hardness to avoid galling, and in sandy service a flushing fluid for cleaning.
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		<title>Seals</title>
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		<pubDate>Fri, 11 Sep 2009 01:49:51 +0000</pubDate>
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				<category><![CDATA[Centrifugal Pumps Bearings-Seals-Wear-Rings]]></category>
		<category><![CDATA[Centrifugal Pumps]]></category>

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		<description><![CDATA[




Seals are necessary to prevent leakage at the point where the shaft enters the pump case. The most inexpensive seal is made of packing material that acts as a pressure breakdown device. Packing must be flexible and capable of being compressed for proper operation. Packing material may be made of flexible metallic strands with graphite [...]]]></description>
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		<title>Bearings</title>
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		<pubDate>Fri, 11 Sep 2009 01:46:11 +0000</pubDate>
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				<category><![CDATA[Centrifugal Pumps Bearings-Seals-Wear-Rings]]></category>
		<category><![CDATA[Centrifugal Pumps]]></category>

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		<description><![CDATA[Ball bearings transmit a load from a rotating surface to a fixed surface via a series of rotating balls. They are generally inexpensive, do not require any separate lubrication system, and can be designed to be selfaligning. However, they have limited ability to handle thrust, high loads, or high speeds.
Roller bearings transmit load from a [...]]]></description>
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