Subsea arrangement
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United States of America Patent
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Oct 21, 2014
Issued Date -
N/A
app pub date -
Dec 16, 2011
filing date -
Dec 17, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A subsea arrangement comprising an external casing and a pressure equalizing valve for equalization of the fluid pressure in an internal space of the casing. The pressure equalizing valve comprises a swing arm and a valve member arranged inside the casing. The swing arm carries the valve member and is pivotable about a pivot axis, under the effect of an external fluid pressure acting on the valve member, from a resting position, in which the valve member covers an opening provided in the casing and prevents fluid flow through this opening, to a raised position, in which the valve member uncovers said opening and allows fluid flow through it from the surroundings into said space for equalization of the fluid pressure therein when the arrangement is lowered into the sea. The swing arm is pivotable from the raised position to the resting position under the effect of gravity.
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