NF EN ISO 4126-1
NF EN ISO 4126-1

NF EN ISO 4126-1

September 2013
Standard Current

Safety devices for protection against excessive pressure - Part 1 : safety valves

ISO 4126-1:2013 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 4 mm and above which are for use at set pressures of 0,1 bar gauge and above. No limitation is placed on temperature.ISO 4126-1:2013 is a product standard and is not applicable to applications of safety valves.

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Main informations

Collections

National standards and national normative documents

Thematics

Sécurité, Gestion des risques et SST, QSE

Publication date

September 2013

Number of pages

26 p.

Reference

NF EN ISO 4126-1

ICS Codes

13.240   Protection against excessive pressure
23.060.40   Pressure regulators

Classification index

E29-417-1

Print number

1 - août 2013

International kinship

ISO 4126-1:2013

European kinship

EN ISO 4126-1:2013
Sumary
Safety devices for protection against excessive pressure - Part 1 : safety valves

ISO 4126-1:2013 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 4 mm and above which are for use at set pressures of 0,1 bar gauge and above. No limitation is placed on temperature.

ISO 4126-1:2013 is a product standard and is not applicable to applications of safety valves.

Replaced standards (1)
NF EN ISO 4126-1
NF EN ISO 4126-1
January 2004
Standard Cancelled
Safety devices for protection against excessive pressure - Part 1 : safety valves

Table of contents
  • Avant-propos
    iv
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Termes et définitions
    1
  • 4 Symboles et unités
    4
  • 5 Conception
    4
  • 5.1 Généralités
    4
  • 5.2 Raccordements d'extrémité
    5
  • 5.3 Exigences minimales pour les ressorts
    6
  • 5.4 Matériaux
    6
  • 6 Essai de production
    6
  • 6.1 Objet
    6
  • 6.2 Généralités
    6
  • 6.3 Essai hydrostatique
    7
  • 6.4 Essai pneumatique
    8
  • 6.5 Ajustement de la pression de réglage ou de début d'ouverture
    8
  • 6.6 Essai d'étanchéité du siège
    8
  • 7 Essai de type
    9
  • 7.1 Généralités
    9
  • 7.2 Essais de détermination des caractéristiques de fonctionnement
    10
  • 7.3 Essais de détermination des caractéristiques de débit
    11
  • 7.4 Détermination du coefficient de débit
    13
  • 7.5 Certification du coefficient de débit
    14
  • 8 Détermination des performances d'une soupape de sûreté
    14
  • 9 Dimensionnement des soupapes de sûreté
    14
  • 10 Marquage et plombage
    14
  • 10.1 Marquage
    14
  • 10.2 Plombage d'une soupape de sûreté
    15
  • Bibliographie
    16
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