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Definitions and safety requirements in accordance with the Pressure Equipment Directive (PED)

A separate EU declaration of conformity must be produced for all devices identified as pressure equipment under the directive (e.g. pressure vessels or pipes). The manufacturer himself can decide which assessment procedure to take as the basis (quality assurance system, type approval test or individual inspection). Also, a CE mark must be attached before the device can be placed on the market.

The Pressure Equipment Directive classifies the pressure equipment into Categories I to IV – depending on the hazard potential. The criteria used in determining the hazard potential are maximum operating pressure, volume or fluid group.

Official title of the Pressure Equipment Directive

Directive 97/23/EC of the European Parliament and of the Council of 29 May 1997 on the approximation of the laws of the Member States relating to concerning pressure equipment


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