Pressure relief device for a sealed system

A pressure relief device for a sealed system, comprising:

• a seal engageable with the system and configured to release from the system to create a fluid flowpath;
• a support structure including a first support and a second support, the first support having an arched shape and connected to the seal to provide support for the seal to prevent the seal from releasing when the seal is exposed to a negative pressure differential until the negative pressure differential reaches a first predetermined level, the second support disposed for engagement with the seal to provide support for the seal to prevent the seal from releasing when the seal is exposed to a positive pressure differential until the positive pressure differential reaches a second predetermined level, the first predetermined level being independent of the second predetermined level;
• and
• a wire connecting the first support and the seal, the wire configured to break and release the seal when the negative pressure differential reaches the first predetermined level.