What pressure is in a full oxygen cylinder?

• A. 2200 psi
• B. 2000 psi
• C. 2400 psi
• D. 2600 psi

Answer: (A)

Gas cylinders are filled to a very high internal pressure, and the number you see when a cylinder is considered full is about 2200 psi for oxygen. That pressure isn’t what you’ll use directly at the torch; a regulator steps it down to a safe, usable level. The reason 2200 psi is the right choice is that it reflects the standard full-fill pressure of a typical oxygen cylinder. The other numbers aren’t the usual full-fill values: 2000 psi might occur as a partial fill or after some gas has been used, while 2400 or 2600 psi would exceed standard filled pressures and aren’t typical for a full cylinder. So, the full cylinder pressure is around 2200 psi.