Shallow FD


The radius of a shallow tank head is equal to or less than the outside diameter. These heads are fabricated with the same outside diameter as the nominal diameter. Shallow tank heads are primarily used for horizontal storage tanks and are not permitted in vessels that must meet pressure-code requirements.

Product Description

Inside Dish Radius: Any radius over 100% of the diameter

Inside Knuckle Radius: Typically 3 X the material thickness

Typical Thin Out Allowance: 1/2” and Under – Add .03125” to the minimum. Over 1/2” – Add .0625” to the minimum

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