Mechanical plug

A mechanical plug for restricting fluid flow through a conduit, the mechanical plug comprising:

• an elongate member defining a central axis;
• a plug member received on the elongate member, the plug member moveable axially along the central axis;
• a wedge received on the elongate member, the wedge including a wedge outer wall;
• a gripper at least partially surrounding the wedge, the gripper moveable both axially along the central axis and radially with respect to the central axis to selectively engage the conduit, the gripper including
• a gripper outer wall configured to selectively engage the conduit, and
• a gripper inner wall configured to engage the wedge outer wall;
• and
• an actuator positioned on a side of the plug member opposite the gripper, the actuator engageable to apply a force to the gripper through the plug member, thereby engaging the gripper outer wall with the conduit.

A mechanical plug for restricting flow through a conduit, the mechanical plug comprising:

• a first plug member;
• an elongate member coupled to the first plug member, the elongate member defining a central axis;
• a second plug member received on the elongate member, the second plug member moveable axially along the central axis;
• a wedge received on the elongate member between the first plug member and the second plug member;
• a seal carrier received on the elongate member between the first plug member and the wedge, the seal carrier including a seal receiving portion and an intermediate portion that protrudes from the seal receiving portion;
• and
• a seal received on the seal receiving portion between the intermediate portion and one of the first plug member and the wedge;
• wherein the mechanical plug is transitionable between a first state, in which the one of the first plug member and the wedge applies a first axial force on the seal, and a second state, in which the one of the first plug member and the wedge applies a second axial force on the seal that is greater than the first axial force to compress the seal such that the seal engages the conduit.