Abstract: A valve actuator for a valve is disclosed, including an actuator housing with a reciprocation axis and a piston configured to reciprocate within the actuator housing along the reciprocation axis. The actuator housing has a port and a chamber disposed between the piston and a portion of the actuator housing with the port for fluid communication with the port of a working fluid. A piston projection or piston recess in the chamber is moveable with the piston to reduce a flow area in the chamber that causes a reduction in speed of the piston prior to reaching a stop position.

Abstract: A system includes a first body of a fluid-handling component and a second body of a fluid-handling component. The system also includes a fastener configured to couple the first body to the second body, and an annular sleeve configured to surround a portion of the fastener that is positioned at an interface between the first body and the second body when the first body and the second body are coupled to one another.

Abstract: A valve actuator for a valve is disclosed, including an actuator housing with a reciprocation axis and a piston configured to reciprocate within the actuator housing along the reciprocation axis. The actuator housing has a port and a chamber disposed between the piston and a portion of the actuator housing with the port for fluid communication with the port of a working fluid. A piston projection or piston recess in the chamber is moveable with the piston to reduce a flow area in the chamber that causes a reduction in speed of the piston prior to reaching a stop position.

Abstract: A system includes a first body of a fluid-handling component and a second body of a fluid-handling component. The system also includes a fastener configured to couple the first body to the second body, and an annular sleeve configured to surround a portion of the fastener that is positioned at an interface between the first body and the second body when the first body and the second body are coupled to one another.

Abstract: A valve system comprising a closure member that is linearly translatable within a valve body. A fail safe assembly is connected to the valve body and a first rod member that is connected to the closure member. A linear actuator is movably connected to the fail safe assembly and is operable to move the first rod member. A mechanical override system is connected to the linear actuator and is operable to move the linear actuator relative to the valve body.

Abstract: A valve system comprising a closure member that is linearly translatable within a valve body. A hydraulic override assembly comprises 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 is connected to a second end of the hydraulic override assembly and comprises a second rod member that is operable to move the first rod member.

Abstract: Methods and apparatus for allowing the injection of hydrate inhibitors into a valve cavity without washing out the valve seals, generally comprising a valve having a sealing member, such as a gate or a ball, that provides for fluid communication between the valve cavity and the valve flowbore. One embodiment of a valve constructed in accordance with the present invention is an expanded gate valve comprising a valve body having a flowbore intersecting a valve cavity and a gate assembly disposed within said cavity. The gate assembly is a parallel expanding gate assembly having ported, juxtaposed members that are moveable into a sealing arrangement with upstream and downstream valve seats disposed about the flowbore. The gate assembly further comprises a flow path that enables direct fluid communication between the aligned ports and the valve cavity.

Abstract: Methods and apparatus for allowing the injection of hydrate inhibitors into a valve cavity without washing out the valve seals, generally comprising a valve having a sealing member, such as a gate or a ball, that provides for fluid communication between the valve cavity and the valve flowbore. One embodiment of a valve constructed in accordance with the present invention is an expanded gate valve comprising a valve body having a flowbore intersecting a valve cavity and a gate assembly disposed within said cavity. The gate assembly is a parallel expanding gate assembly having ported, juxtaposed members that are moveable into a sealing arrangement with upstream and downstream valve seats disposed about the flowbore. The gate assembly further comprises a flow path that enables direct fluid communication between the aligned ports and the valve cavity.

Abstract: A fail-safe gate valve for sub-sea use features a floating, pressure biased compensating piston whose movement prevents internal pressure buildup from opening movement of the gate. A pre-charged fluid chamber provides the bias on the balancing piston. Using unequal piston diameters reduces the charge pressure. The balancing piston is not connected to the gate so that internal pressures can be employed to act on a net area, which biases the gate toward its fail-safe position.

Abstract: A shearing type of gate valve having a sleeve of hard wear resistant material in the opening through the gate and coating with insert rings of hard, wear resistant material in the seat rings for shearing a wire line or tubular member extending through the valve and the gate, the sleeve and insert ring being assembled with the gate and the seat rings in a manner to provide sufficient compression preload thereon so that they are not subjected to tension loads which avoids chipping, breaking or other damage to the sleeve and the insert rings. Preferably the sleeve and insert rings are of tungsten carbide. In two modified form of the present invention an insert sleeve of hardened, wear resistant material is provided in the opening of the gate and an insert ring of hardened, wear resistant material is provided in one of the seat rings so that only a single shearing of the cable element is provided so that the short section is not created in the shearing and left in the opening through the gate while it is closed.