The EN 12516-2 (2004) covers the calculation method for industrial steel valve shells. In this standard you will find a lot of options for the calculation of valve shells in general and for several flange types.
With the EN 12516-2 modules you can calculate complete valve shells and components like:
Cylindrical, oval, rectangular and spherical shells
Flanges (loose-type and welded-neck flanges with or without hub, oval and rectangular / square types)
Torispherical and semi-ellipsoidal heads
Circular plates and circular ring plates for 17 load cases
Self-sealing joints
for operation, mounting, test and other special cases according to the DIN EN 12516-2.
The required boundary conditions are checked during the calculation and occurring exceeding are displayed. The material database comprising more than 3300 materials is integrated.
The module package comprises 4 modules:
| 12516A | 1. Shells under internal pressure 2. Welding-neck flanges, slip-on flanges, loose type flanges |
| 12516B | 1. Oval flanges, rectangular flanges, bolt calculation 2. Self-sealing joints |
| 12516C | 1. Dished heads 2. Spherical shells according 8.3 3. Flat circular plates and rotary ring plates |
| 12516D | 1. Bolted covers flat plates with/without bore/nozzle 2. Gland flange loads according chapter 11 |
The characteristic data of gaskets per DIN EN 1591-2 are included as well as the characteristics of flat gaskets according to DIN EN 1514 including manufacturer‘s data with the 1514N module to ensure a convenient and correct flange calculation. Data of bolts with metric and UNC threads are implemented.
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Main changes:
No fatigue analysis anymore, reference to calculation according to EN 13445-3
New calculation method for packed glands
Gasket characteristics converted to EN, only partially equal to characteristics according EN 1591-2 (characteristics in EN 12516-2 are only informational)
Material characteristics / safety factors adjusted to EN, similar to EN 13445-3
Flange calculation
Explicit hint:
A calculation can be performed according EN 1591-1, EN 13445-3 or section 10 of EN 12516-2. Many new regulations and changed factors lead to greater required flange thicknesses.
A lot of minor changes in the calculation of the effective lengths and the required minimum wall thicknesses may in some cases result in greater wall thicknesses. The considered width of reinforcement pads is limited. Additional forces F1 and F2 considered for self-sealing plates
