A pressure vessel is a closed leak-tight container (normally cylindrical or spherical) designed to hold fluids (i.e., gases or liquids) at a pressure substantially different (higher or lower) from the ambient pressure. They are usually made from carbon steel or stainless steel and assembled from plates by welding method. However, other materials like Aluminum, copper, non-metals, etc. also find usage as pressure vessel material in some specific situations.

Based on their installation they are classified into the following two groups.

1. Vertical pressure vessel
2. Horizontal Pressure Vessel

Contents when deciding on Pressure Vessels

1. What are the Types of Pressure Vessels?
2. Design Inputs of Pressure Vessel
3. Pressure Vessel Design Formula
4. Type of Pressure Vessels:
5. Pressure Vessel Parts
6. Design codes used for Pressure Vessel
7. Internals used in Pressure Vessel:
8. Example of Pressure Vessel
9. Material of Construction most widely used
10. Applications of Pressure Vessel