Process Equipment and Plant Design
Spherical shaped pressure vessel is considered to be the most ideal, because it can

Withstand higher pressure for a given metallic shell thickness
Be supported very easily
Be fabricated very easily
Be designed without wind load considerations

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Process Equipment and Plant Design
A head comprises of straight flange section, corner torus, section and central dished section. Crown radius and knuckle radius in a head is related respectively to the

Central dished section and corner torus section
Corner torus section and central dished section
Central dished section and straight flange section
Straight flange section and corner torus section

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