Shut-Off Valve For Liquefied Natural Gas
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United States of America Patent
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Jun 30, 2015
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Jul 4, 2014
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Abstract
The invention is directed to a valve for gas under pressure, for example at temperatures below −100° C., comprising a body with a gas inlet, a gas outlet and a passage connecting the inlet with the outlet; a shut-off device for closing the gas passage; a spindle designed for operating the shut-off device; and at least one gasket between the spindle and the body. The valve further comprises at least one cavity around the spindle for accumulating particles separated from the at least one gasket while operating the spindle and the shut-off device, for example at temperatures below −100° C.
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