A pressure vessel is a container designed to hold gases or liquids at a pressure substantially different from the ambient pressure.

Pressure vessels can be dangerous, and fatal accidents have occurred in the history of their development and operation. Consequently, pressure vessel design, manufacture, and operation are regulated by engineering authorities backed by legislation. For these reasons, the definition of a pressure vessel varies from country to country.

A pressure vessel is a container designed to hold gases or liquids at a pressure substantially different from the ambient pressure. These vessels are used in a variety of industries, including oil and gas, chemical processing, and power generation. They are designed to withstand the internal pressure and are subject to rigorous safety regulations to ensure their integrity and reliability.