EN 764-1:2004

Pressure equipment - Part 1: Terminology - Pressure, temperature, volume, nominal size

Publication date:   Aug 10, 2006

General information

99.60 Withdrawal effective   Apr 1, 2015


CEN/TC 54 Unfired pressure vessels

European Norm

23.020.30   Pressure vessels



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This part of the European Sstandard defines the basic terminology and symbols to be used for pressure equipment addressed by the European Directive 97/23/EC with regard to pressure, temperature, volume and nominal size.
For the purpose of this standard "pressure equipment" means vessel, piping, pressure accessory and safety accessory.
Relations between pressure quantities defined in this standard are shown in Figures 4 and 5 of EN 764-7. These figures also illustrate relations between these pressures and those related to the safety accessory.
NOTE 1 In addition to terms used in the three official CEN languages (English, French and German), this European Standard gives in annex A the equivalent terms in the Danish, Dutch, Finnish, Greek, Icelandic, Italian, Norwegian, Portuguese, Spanish, and Swedish languages; these are published under the respon-sibility of the respective member bodies for those countries. However, only the terms and definitions given in the official languages can be considered as EN terms and definitions.
NOTE 2 This part of the European Standard does not stipulate the units to be used for the quantities defined. These are to be taken from the other parts of the standard.

Life cycle


EN 764:1994


EN 764-1:2004
99.60 Withdrawal effective
Apr 1, 2015


EN 764-1:2015