What is the normal O2 bottle pressure?

What is the normal O2 bottle pressure?

• A. 1800 PSI
• B. 1850 PSI
• C. 1900 PSI
• D. 1950 PSI

Answer: (B)

Oxygen bottles on aircraft are high‑pressure cylinders that are filled to a standard nominal pressure when new. A full bottle is typically about 1850 psi, which is the normal reading you’d expect on the bottle gauge. As oxygen is used, the pressure drops, so the gauge will show lower numbers. Temperature and bottle size can cause small variations, but 1850 psi is the typical full-pressure value used to indicate a normal, ready-to-use bottle.

Oxygen bottles on aircraft are high‑pressure cylinders that are filled to a standard nominal pressure when new. A full bottle is typically about 1850 psi, which is the normal reading you’d expect on the bottle gauge. As oxygen is used, the pressure drops, so the gauge will show lower numbers. Temperature and bottle size can cause small variations, but 1850 psi is the typical full-pressure value used to indicate a normal, ready-to-use bottle.