A 2:1 elliptical tank head is fabricated to have a specific shape instead of a particular dish or knuckle radius. The dish radius is approximately 90% of the diameter, and the knuckle radius is approximately 17% of the diameter. 2:1 elliptical flanged and dished heads are ASME compliant.

Defining Features

• Inspected for compliance by an ASME Authorized Inspector
• Higher volume than other head shapes at the same diameter
• Useful for moderate to high-pressure applications