Enter the inside diameter of the bellows (Db). This value will normally be equal to the pipe or vessel inside diameter. Some geometries are larger in diameter than the attached cylinder. Thus, the bellows ID will be larger than the vessel/pipe ID.
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Dim. |
Description |
Sketch |
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Af |
Cross sectional metal area of one reinforcing fastener. |
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Db |
Inside diameter of bellows convolution. |
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Dm |
Mean diameter of bellows convolution. |
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Dr |
Cross sectional diameter of the reinforcing ring. |
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Lc |
Bellows collar length. For the toroidal bellows, Lc is determined by dividing the collar cross section area with the collar thickness. |
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Lf |
Effective length of one reinforcing fastener. |
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Lt |
End tangent length. |
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Lw |
Distance between toroidal bellows attachment welds. |
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q |
Convolution pitch. |
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r |
Mean radius of toroidal bellows convolution. |
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t |
Bellow nominal thickness of one ply. |
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tc |
Collar thickness. |
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w |
Convolution height. |
