Marking of glass components
The basis for the marking of borosilicate glass 3.3 components is the Pressure Equipment Directive 97/23/EC and European Standard EN 1595 ("Glass Pressure Vessels”). Information additional to this included on the component is provided for quality assurance purposes (traceability, correct use by the customer, etc) and has been approved by the Notified Body responsible for monitoring our compliance with the directive.
The different marking possibilities listed in fig.1 to 3 are used as follows:

Fig. 1	Standard parts as catalogue
Fig. 2	Special parts with catalogue operating conditions
Fig. 3	Special parts whose permissible operating pressure and/or temperatures differ from the details in this catalogue

Contrary to table components for DN 15 and DN 25 are supplied with no CE mark (see article 3, paragraph 3 of directive 97/23/EC on this point).

For all plants built according Pressure Equipment Directive (PED) a risk analysis has to be made. For plants made from borosilicate glass 3.3 the following residual risks should be taken into consideration

<< Fig. 1

<< Fig. 2