Redundant metal-to-metal seals for use with internal valves

摘要

Redundant metal-to-metal seals for use with internal valves are described. A plug having redundant sealing functionality for use with a poppet of an internal valve includes a tapered surface to sealingly engage a seat of the poppet. Additionally, the plug includes a seal (528) adjacent the tapered surface and disposed in a groove (530) defined by the plug to sealingly engage the seat (516).