Market Surveillance for Pressure Equipment Knowledge Leaflets Leaflets Further leaflets are available only in german, french and italian language. Pressure equipment assemblies How to put assemblies correctly on the marktet (only german version) (pdf – 31.48KB) Download Evaluation of assemblies - consideration by PED - ADCO Group (European market surveillance authorities) (pdf – 548.78KB) Download Classification of pressure equipment When is pressure equipment subject to the DGV? Diagram to determine whether a declaration of conformity is required (pdf – 160.53KB) Download Classification of piping Diagram for piping containing gas or steam (pdf – 86.86KB) Download Diagram for piping containing a liquid (pdf – 89.22KB) Download