A pressure vessel designed for pressures higher than 40 psi is called what?

A pressure vessel designed for pressures higher than 40 psi is called what?

• A. Cylinder
• B. Carboy
• C. Dewar flask
• D. Tank

Answer: (A)

When we’re referring to containers for compressed gases, the term cylinder is used because these vessels are specifically designed to hold gas at high pressure in a rigid, portable form. A cylinder is built to withstand substantial internal pressures (often hundreds to thousands of psi) and includes safety features like a valve and protective fittings, making it suitable for transport and field use. Carboys, on the other hand, are meant for liquids and are not designed to handle high pressure. Dewar flasks are insulated to carry cryogenic liquids, focusing on minimizing heat transfer rather than withstanding high internal pressure. Tanks are large bulk containers used for storage or transport of liquids or gases and are generally not the small, portable high-pressure vessels intended for compressed gases.

When we’re referring to containers for compressed gases, the term cylinder is used because these vessels are specifically designed to hold gas at high pressure in a rigid, portable form. A cylinder is built to withstand substantial internal pressures (often hundreds to thousands of psi) and includes safety features like a valve and protective fittings, making it suitable for transport and field use.

Carboys, on the other hand, are meant for liquids and are not designed to handle high pressure. Dewar flasks are insulated to carry cryogenic liquids, focusing on minimizing heat transfer rather than withstanding high internal pressure. Tanks are large bulk containers used for storage or transport of liquids or gases and are generally not the small, portable high-pressure vessels intended for compressed gases.