Most recent
DS/EN 12516-1:2014+A1:2018
Industrial valves - Shell design strength - Part 1: Tabulation method for steel valve shells
This European Standard specifies the tabulation method for determining the wall thickness of valve bodies, bonnets and covers with essentially circular cross-section made in forged, cast or fabricated steel.**For valve shells with oval, rectangular or non-circular shapes, see 8.6.**The range of PN or Class designations for which thicknesses are tabulated is:**PN 2,5, PN 6, PN 10, PN 16, PN 25, PN 40, PN 63, PN 100, PN 160, PN 250, PN 320, PN 400, Class 150, Class 300,Class 600, Class 900, Class 1 500, Class 2 500, Class 4 500.**Pressure/temperature ratings are specified for each material group for the above PN Standard Class and Special Class designations.**The non-destructive examination procedures and acceptance levels that need to be applied to the valve shell components in order for the valve to be used at Special Class pressure/temperature ratings are defined.**Details are also given for the alternative rules for small bore valves of DN 65 and smaller designated as Limited Class.**This standard does not apply to threaded end valves:**- DN 80 or larger;**- or which have pressure ratings greater than Class 2 500;**- or which operate at temperatures greater than 540 C.**Socket welding end valves DN 80 or larger are outside the scope of this standard.
Danish Standards [ds]