page_title: Head (vessel)
section_title: ASME F&D head
hierarchical_section_title: Head (vessel) / Shapes / Torispherical head (or flanged and dished head) / ASME F&D head
caption_attribution_description: Klöpperboden (bumped boiler head) dimensioning Français&#160;: Cotes d'un fond bombé.
context_page_description: A head is one of the end caps on a cylindrically shaped pressure vessel.
context_section_description: Commonly used for ASME pressure vessels, these torispherical heads have a crown radius equal to the outside diameter of the head  (), and a knuckle radius equal to 6% of the outside diameter  ().  The ASME design code does not allow the knuckle radius to be any less than 6% of the outside diameter.
caption: Schematic of a torispherical head - specifically a Klöpper head
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