A blind flange looks simple: a round plate with a bolt circle. Yet several checks compete to set its thickness – and not always the one you expect. This post walks from operating pressure to recommended plate thickness step by step.
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Dished ends close almost every cylindrical pressure vessel. In German-speaking markets two shapes are standard: the torispherical (Klöpper) head per DIN 28011 and the korbbogen head per DIN 28013. They look alike at first glance but differ clearly in height, material and load-carrying behaviour. This post explains the geometry, works through an example, and shows where geometry ends and the strength calculation begins.
A German version of this article is available — switch the language to Deutsch.
The Bourdon tube gauge is the most common pressure instrument in plant engineering and maintenance. Selection mistakes rarely show immediately – they appear as trembling pointers, permanent zero shifts or a burst measuring element. This post summarises the selection rules of the EN 837 series and works through an example.
A German version of this article is available — switch the language to Deutsch.