NF E29-412

NF E29-412

September 1990
Standard Cancelled

Industrial valves. Safetu and relief valves. Operating and flow tests.

La présente norme définit les principes des essais nécessaires à la vérification des caractéristiques et/ou à la certification des soupapes de sûreté.

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Main informations

Collections

National standards and national normative documents

Thematics

Sécurité, Gestion des risques et SST, QSE

Publication date

September 1990

Number of pages

9 p.

Reference

NF E29-412

ICS Codes

13.240   Protection against excessive pressure

Classification index

E29-412

Print number

1 - 01/07/1993

International kinship

ISO 4126:1981
Sumary
Industrial valves. Safetu and relief valves. Operating and flow tests.

La présente norme définit les principes des essais nécessaires à la vérification des caractéristiques et/ou à la certification des soupapes de sûreté.
Replaced standards (1)
NF E29-412
September 1984
Standard Cancelled
Industrial valves. Safety and relief valves. Operating and flow tests.

Standard replaced by (3)
NF EN ISO 4126-1
July 2004
Standard Cancelled
Safety devices for protection against excessive pressure - Part 1 : safety valves

ISO 4126-1:2004 specifies general requirements for safety valves irrespective of the fluid for which they are designed. It is applicable to safety valves having a flow diameter of 6 mm and above which are for use at set pressures of 0,1 bar gauge and above. No limitation is placed on temperature. This is a product standard and is not concerned with applications for safety valves.

NF EN ISO 4126-4
July 2004
Standard Cancelled
Safety devices for protection against excessive pressure - Part 4 : pilot operated safety valves

ISO 4126-4:2003 specifies general requirements for pilot operated safety valves, other than those covered in ISO 4126-1, irrespective of the fluid for which they are designed. In all cases, the operation is carried out by the fluid in the system to be protected. ISO 4126-4:2003 is applicable to pilot operated safety valves having a valve flow diameter of 6 mm and above which are for use at set pressures of 0,1 bar gauge and above. No limitation is placed on temperature. This is a product standard and it is not concerned with applications for pilot operated safety valves.

NF EN ISO 4126-7
July 2004
Standard Cancelled
Safety devices for protection against excessive pressure - Part 7 : common data

ISO 4126-7:2004 contains data common to other parts of ISO 4126, thus avoiding unnecessary repetition, and is referenced in those other parts as appropriate.

Table of contents
  • 1 OBJET ET DOMAINE D'APPLICATION
    3
  • 2 RÉFÉRENCES
    3
  • 3 PRESCRIPTIONS GÉNÉRALES
    4
  • 4 ESSAIS DE FONCTIONNEMENT ET DE DÉBIT DES SOUPAPES DE SÛRETÉ
    4
  • 4.1 Généralités
    4
  • 4.2 Essais de détermination des caractéristiques de fonctionnement
    5
  • 4.3 Essais de détermination des caractéristiques de débit
    6
  • 4.4 Procès-verbaux et résultats d'essais
    8
  • 5 ESSAIS DE CERTIFICATION DE SOUPAPES DE SÛRETÉ ET RÉSULTATS
    8
  • 5.1 Certification du débit
    8
  • 5.2 Certification de coefficient de débit K"9
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