Patent ID: 8820415

Claim:
A system for selectively enabling fluid communication between two volumes, comprising: a tubular having a port housing with at least one port; a member disposed with the tubular and movable between a closed position in which the port is closed and an open position in which the port is open; a chamber formed between the member and the tubular, the chamber in fluid communication with the port when the member is in the closed position but not when the member is in the open position; a lock element positively engaged with both the member and the tubular for maintaining the member in the closed position; and an actuator in keyed engagement with the lock element for biasing the lock element, wherein actuation of the actuator releases the lock element to resiliently spring into engagement with solely one of the member or the tubular for enabling the member to move relative to the tubular to the open position for opening the port, wherein pressurizing the system simultaneously holds the member in the closed position and actuates the actuator for releasing the member.