A hemispherical dished end, also known simply as a hemispherical head or hemispherical cap, is a type of end closure or cap used in pressure vessels, tanks, and containers. It is characterized by its shape, which resembles half of a sphere. This design offers certain advantages in terms of strength and distribution of stress within the vessel.
Hemispherical dished ends are often used in applications where the vessel’s contents need to be under pressure, such as in boilers, pressure vessels, storage tanks for liquids or gases, and even in some types of industrial processing equipment. The hemispherical shape helps distribute the internal pressure more evenly across the curved surface, leading to better structural integrity compared to flat or other types of dished ends.