pressure vessel

This term is a technical specification used primarily in mechanical engineering, chemical processing, and industrial safety. It describes a specialized piece of equipment where the structural integrity of the walls is critical to prevent catastrophic failure or explosions due to internal or external pressure differentials.

In professional contexts, the term is often associated with regulatory codes, such as the ASME Boiler and Pressure Vessel Code. It is distinct from a simple tank or container because it implies a rigorous engineering standard for wall thickness and material strength to withstand specific pressure ratings.