Oxygen disk blowout (green disk) occurs at which PSI range?

Oxygen disk blowout (green disk) occurs at which PSI range?

• A. 2000-2100 PSI
• B. 2500-2775 PSI
• C. 3000-3200 PSI
• D. 3500-3600 PSI

Answer: (B)

The key idea is that the green disk is a burst/rupture disk in the oxygen system, a safety device that opens to allow oxygen flow when the bottle pressure reaches a specific high level. It’s designed to rupture around 2,500 to 2,775 psi, so the oxygen will begin to flow through the regulator and to the crew masks once the cylinder pressure hits that range. That’s why this range is the correct answer. The other ranges are outside the disk’s design threshold and would not trigger the blowout as specified.

The key idea is that the green disk is a burst/rupture disk in the oxygen system, a safety device that opens to allow oxygen flow when the bottle pressure reaches a specific high level. It’s designed to rupture around 2,500 to 2,775 psi, so the oxygen will begin to flow through the regulator and to the crew masks once the cylinder pressure hits that range. That’s why this range is the correct answer. The other ranges are outside the disk’s design threshold and would not trigger the blowout as specified.