A door assembly for a pressure vessel includes a door, a hub to attach to the pressure vessel and to receive the door, and an annular seal to seal between the door and the hub. A hinge arm is coupled to the hub and to the door and is able to pivot relative to the hub about a hinge axis. A door actuator having an elongate member extending along an actuator axis is spaced-apart from the hinge axis and coupled to the hub and to the hinge arm. The elongate member travels with the hinge arm when the arm pivots relative to the hub, and rotates about the actuator axis. The door actuator is configured to cause the seal to engage sealingly the hub and the door.

A door assembly for a pressure vessel includes a door, a hub to attach to the pressure vessel and to receive the door, and an annular seal to seal between the door and the hub. A hinge arm is coupled to the hub and to the door and is able to pivot relative to the hub about a hinge axis. A door actuator having an elongate member extending along an actuator axis is spaced-apart from the hinge axis and coupled to the hub and to the hinge arm. The elongate member travels with the hinge arm when the arm pivots relative to the hub, and rotates about the actuator axis. The door actuator is configured to cause the seal to engage sealingly the hub and the door.

A door assembly for a pressure vessel includes a door, a hub for receiving the door, and an annular seal to seal therebetween. A hinge arm is coupled to the hub and to the door and is pivotable relative to the hub about a hinge axis. A door actuator having an elongate member extending along an actuator axis is spaced-apart from the hinge axis and coupled to the hub and to the hinge arm. The elongate member travels with the hinge arm when the arm pivots relative to the hub, and rotates about the actuator axis.

An actuated locking system for locking a pressurized door assembly is provided. The locking system provides an actuator to position a claw arm having a hook latch in a locked and unlocked configuration. The claw arm may include a base element connected to the door assembly so that the hook latch is adjacent to a cooperating latching notch. The actuator may be connected to the base element on one end and on an opposing end pivotally connected to a pair of boomerang arms, which in turn is pivotally connected to a pair of fork arms, which in turn is operably connected to position the claw arm in the locked configuration and the unlocked configuration.

An actuated locking system for locking a pressurized door assembly is provided. The locking system provides an actuator to position a claw arm having a hook latch in a locked and unlocked configuration. The claw arm may include a base element connected to the door assembly so that the hook latch is adjacent to a cooperating latching notch. The actuator may be connected to the base element on one end and on an opposing end pivotally connected to a pair of boomerang arms, which in turn is pivotally connected to a pair of fork arms, which in turn is operably connected to position the claw arm in the locked configuration and the unlocked configuration.

A door assembly for a pressure vessel includes a door, a hub for receiving the door, and an annular seal to seal therebetween. A hinge arm is coupled to the hub and to the door and is pivotable relative to the hub about a hinge axis. A door actuator having an elongate member extending along an actuator axis is spaced-apart from the hinge axis and coupled to the hub and to the hinge arm. The elongate member travels with the hinge arm when the arm pivots relative to the hub, and rotates about the actuator axis.

Improved quick opening closures are disclosed. The closures may include a hub and a door hingedly attached to the hub by hinge arms. A seal is disposed around the door. The hinge arms may be mounted to door blocks that are attached to and substantially centered on the door. At least one support post may be connected between the hinge arms. An activation bar may be pivotally connected to a support post, such as with a pivot bracket. The activation bar is used to evenly apply closing force to the door through the centralized hinge blocks to evenly compress the seal between the door and the hub. The activation bar may also be used to pull the door out of engagement with the hub toward its open position. Various devices may connect a distal end of the activation bar to the hub to assist in opening/closing the door.

Improved quick opening closures are disclosed. The closures may include a hub and a door hingedly attached to the hub by hinge arms. A seal is disposed around the door. The hinge arms may be mounted to door blocks that are attached to and substantially centered on the door. At least one support post may be connected between the hinge arms. An activation bar may be pivotally connected to a support post, such as with a pivot bracket. The activation bar is used to evenly apply closing force to the door through the centralized hinge blocks to evenly compress the seal between the door and the hub. The activation bar may also be used to pull the door out of engagement with the hub toward its open position. Various devices may connect a distal end of the activation bar to the hub to assist in opening/closing the door.

An assembly to coupling a pipeline closure with a pipeline closure hub, the pipeline closure hub including a closure hub opening portion and a coupling portion. The coupling including a pipeline closure extension extending from the pipeline closure. The pipeline extension including a junction portion to abut the closure hub opening portion of the pipeline closure hub and a fastener extending around the closure hub.

Improved quick opening closures are disclosed. The closures may include a hub and a door hingedly attached to the hub by hinge arms. A seal is disposed around the door. The hinge arms may be mounted to door blocks that are attached to and substantially centered on the door. At least one support post may be connected between the hinge arms. An activation bar may be pivotally connected to a support post, such as with a pivot bracket. The activation bar is used to evenly apply closing force to the door through the centralized hinge blocks to evenly compress the seal between the door and the hub. The activation bar may also be used to pull the door out of engagement with the hub toward its open position. Various devices may connect a distal end of the activation bar to the hub to assist in opening/closing the door.