This European Standard defines a calculation method for bolted, gasketed, circular flange joints. Its purpose is to ensure structural integrity and control of leak tightness. It uses gasket parameters based on definitions and test methods specified in EN 13555. The calculation method is not applicable to joints with a metallic contact out of the sealing face or to joints whose rigidity varies appreciably across gasket width. For gaskets in incompressible materials, which permit large deformations, the results given by the calculation method can be excessively conservative (i.e. required bolting load too high, allowable pressure of the fluid too low, required flange thickness too large, etc.).
EN 1591-1:2013 Referenced Document
EN 13555:2004 Flanges and their joints - Gasket parameters and test procedures relevant to the design rules for gasketed circular flange connections
EN 1591-1:2013 history
2013EN 1591-1:2013 Flanges and their joints - Design rules for gasketed circular flange connections - Part 1: Calculation
2001EN 1591-1:2001 Flanges and their joints - Design rules for gasketed circular flange connections - Part 1: Calculation method Incorporates Amendment A1: 2009