PRESSURE RELIEF VALVE ASSEMBLY AND METHODS

  • US 20170067570A1
  • Filed: 08/30/2016
  • Published: 03/09/2017
  • Est. Priority Date: 09/04/2015
  • Status: Active Grant
First Claim
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1. A pressure relief valve assembly defining a longitudinally-extending center axis, the pressure relief valve assembly comprising:

  • a first sub defining a first internal fluid passage, the first internal fluid passage being generally coaxial with the center axis, the first sub comprising a counterbore formed therein, a first internal annular shoulder defined by the counterbore, and an internal threaded connection formed in the interior of the first sub at the counterbore thereof;

    a second sub connected to the first sub and defining a second internal fluid passage, the second internal fluid passage being generally coaxial with the center axis and thus with the first internal fluid passage, the second sub comprising an external threaded connection formed in the exterior thereof; and

    a rupture disc clamped between the second sub and the first annular shoulder of the first sub so that the rupture disc is positioned axially between the first and second internal fluid passages, the rupture disc being adapted to rupture when a pressure differential across the pressure relief valve assembly reaches or exceeds a predetermined pressure differential, so that the first and second internal fluid passages are in fluid communication;

    wherein the first external threaded connection of the second sub is threadably engaged with the internal threaded connection of the first sub to connect the second sub to the first sub and clamp the rupture disc therebetween.

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