Appendix 2 Flange

Appendix 2 Flanges, or Custom Flanges, follow the design procedure pulled from Section VIII, Division 1 Appendix 2.  The method provided in Appendix 2 is augmented by Taylor Forge Bulletin 502 for full face gaskets, and also the common industry used effective pressure method for external loads on a flange.  This method is more flexible than just picking a rated flange; but the design is also more time consuming.

 Consider using this procedure for your flange instead of picking a rated flange in the following cases:

1. Dimensions fall outside the scope of B16.5/B16.47
2. A corrosion allowance is specified
3. The bolting falls outside the scope of B16.5/B16.47 or a tensile check on the bolting is required
4. External loads on the flange are required
5. The gasket falls outside the scope of B16.5/B16.47
6. A blind flange is being designed and it requires a nozzle
7. The flange is part of a spherically dished cover

Articles in this section:

• Appendix 2 Flange - Gasket
• Appendix 2 Flange - General Info
• Appendix 2 Flange - Host/Flange
• Appendix 2 Flange - Load/Bolt Calcs
• Appendix 2 Flange - Pressure
• Creating a Spherically Dished Cover
• Determining the Gasket Reaction for Lap Joint Flanges
• Determining the Value of the Lever Arm on a Spherically Dished Cover
• Reducing Number of Bolts Results in Flange Thickness Reduction