WEIGHTED PRESSURE RELIEF VALVE

摘要

A subsea pressure relief valve (10) includes a water-filled nozzle (12) fluidly connected to a hydrocarbon distribution manifold (208). A valve body (14) is connected to the distribution manifold, with an outlet (90) of the nozzle coincident with an interior water-filled chamber (44) of the valve body. A first seal element (30) is removably seated against the nozzle outlet and an arm (18) is hinged to the body and configured to apply a force along a seal axis (87) and bias the first seal element into sealing engagement with the nozzle outlet until hydrocarbon pressure exceeds a sealing pressure of the applied force and unseats the first seal element from the nozzle outlet such that excess hydrocarbons exit through an outlet (45) of the valve body. A weight (19a, 19b) is disposed on the arm at a distance from the seal axis.