Industrial valves. Safety and relief valves. General design, test, maintenance marking, conditioning.

La publication de la présente norme a été jugée nécessaire afin de faire suivre à la normalisation française les évolutions de la normalisation ISO. Cette évolution s'accompagne d'une nouvelle structure donnée à l'ensemble des normes relatives aux soupapes de sûreté.

Main informations

Collections

National standards and national normative documents

Thematics

Sécurité, Gestion des risques et SST, QSE

Publication date

December 1988

Number of pages

11 p.

Reference

NF E29-411

ICS Codes

13.240 Protection against excessive pressure

Classification index

E29-411

Print number

1 - 01/02/1992

Sumary

Industrial valves. Safety and relief valves. General design, test, maintenance marking, conditioning.

La publication de la présente norme a été jugée nécessaire afin de faire suivre à la normalisation française les évolutions de la normalisation ISO. Cette évolution s'accompagne d'une nouvelle structure donnée à l'ensemble des normes relatives aux soupapes de sûreté.

Replaced standards (1)

NF E29-411

September 1984

Standard Cancelled

Industrial valves. Safety and relief valves. General design, test, marking, conditioning.

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
4
3 CONCEPTION GÉNÉRALE
4
3.1 Construction
4
3.2 Matériaux
4
3.3 Raccordement
5
4 TYPES DE SOUPAPES DE SÛRETÉ
5
4.1 Généralités
5
4.2 Types d e soupapes
5
5 ESSAIS DE RÉSISTANCE À LA PRESSION DE L'ENVELOPPE
6
5.1 Prescriptions générales
6
5.2 Essai de résistance à la pression de l'enveloppe
6
6 ESSAI D E FONCTIONNEMENT
8
6.1 Généralités
8
6.2 Essais de détermination des caractéristiques de fonctionnement
8
6.3 Vérification de la qualité de l'étanchéité
9
7 PROCÈS VERBAUX ET RÉSULTATS D'ESSAIS
9
8 MAINTENANCE, RÉGLAGE ET RÉPARATION DES SOUPAPES
9
9 MARQUAGE
10
9.1 Sur le corps
10
9.2 Sur le raccordement
10
9.3 Sur la fiche signalétique
11
10 CONDITIONNEMENT MINIMAL
11
ANNEXE - Différences essentielles par rapport à la norme ISO 4126
12

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