Hemispherical Tank Heads
Strength and Resistance
The hemispherical head features a thinner head than the shell. This head uses a standard code 3:1, which allows for better distribution and resistance to deformation.
Twice the Pressure Rating Resistance
Hemispherical tank heads can resist about twice the pressure rating of an elliptical dished head or cylindrical shell of the same thickness and diameter.
With a hemispherical head, the pressure in the vessel is divided equally across the surface of the head. This ensures that the vessel can withstand the pressures it is subjected to. Additionally, it helps to distribute the pressure evenly so that no one area is under more strain than another.
Using two hemispherical heads back to back creates the most efficient shape for pressurized storage.
Hemispherical tank heads are made from: steel, carbon, aluminum, titanium, and more.
Inside Dish Radius
50% of diameter
Typical Thin Out Allowance
1/2″ and under – Add .03125″ to the minimum
Over 1/2″ – Add .0625” to the minimum
All Hemispherical heads are offered as segmental construction.
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Ready for a Quote?
Contact us today for a custom quote on your hemispherical head project. Whether you’re looking for tank heads or complete spheres for high-pressure storage, Brighton Tru-Edge can deliver.