Patent ID: 7913971
Filing Date: 2011-03-29
Classification: E21B,F16K

Abstract:
1. A subsea valve system locatable and operable subsea comprising: a closure member that is linearly translatable within a valve body; a hydraulic override assembly comprising a first end that is connected to the valve body and a first rod member that is connected to the closure member; a linear actuator connected to a second end of the hydraulic override assembly and operable subsea; wherein the linear actuator comprises a second rod member that is moveably disposed within a housing; wherein the second rod member is extendable subs a to linearly translate the first rod member and the closure member and hold the closure member in an open position; wherein the hydraulic override assembly is operable subsea to linearly translate the closure member independent of the operation of the linear actuator and hold the closure member in a closed position; and wherein a portion of the housing of the linear actuator partially defines a hydraulic chamber of the hydraulic override assembly.