For calculating flanges, gaskets or bolts you may use several different LV programs varying from a simple and rough design to a complex and detailed calculation. The decision for a specific design code depends on the wishes of the final customer.
Comparison of flange calculations
|
DIN V 2505 |
LV does not recommend applying this pre-standard. This standard has been withdrawn and the upper gasket seating is not considered. Several TÜV bodies (German inspection authorities), however, apply this standard. |
|
DIN E 2505 |
Detailed calculation of the gasket / flange complex. This standard is in the state of a draft. |
|
DIN EN 1591 |
Detailed calculation, including all additional gasket calculations (e.g. mounting the gaskets, retorquing the bolts, gasket seating in operation, mounting and test state). Advantage: Harmonized European Standard Disadvantage: Additional gasket characteristics necessary (e.g. modulus of elasticity) |
|
AD2000 Merkblaetter B7/ B8 |
Similar to DIN V 2505, but not withdrawn. Limited application with welding-neck flanges |
|
ASME VIII Div.1 |
Calculation according ASME code. Advantage : Grants a save flange design Disadvantage: Upper gasket seating is not considered. Brings up big flange thickness. |
|
DIN EN 13445 -3 |
Flange and gasket design per Taylor- Forge method Advantage: Harmonized European Standard, easier to use than DIN EN 1591. Disadvantage: Brings up big flange thickness. |
|
DIN EN 12516-2 |
Calculating of valve shells including many options for calculating general pressure-loaded and several different flange types. Advantage: most suitable for valve shells Disadvantage: not suitable for piping and vessels |
We recommend applying the DIN EN 1591.
It may make sense using a simplified method, if not all gasket characteristics are available.