NF EN ISO 4126-5

NF EN ISO 4126-5

September 2013
Standard Current

Safety devices for protection against excessive pressure - Part 5 : controlled safety pressure-relief systems (CSPRS)

ISO 4126-5:2013 specifies the requirements for controlled safety pressure relief systems (CSPRS) irrespective of the fluid for which they are designed.It is applicable for main valves having a flow diameter of 4 mm and above which are for use at pressures of 0,1 bar gauge and above. No limitation is placed on temperature.ISO 4126-5:2013 is a product standard and is not applicable to applications.

See more
View the extract
Main informations

Collections

National standards and national normative documents

Thematics

Sécurité, Gestion des risques et SST, QSE

Publication date

September 2013

Number of pages

31 p.

Reference

NF EN ISO 4126-5

ICS Codes

13.240   Protection against excessive pressure
23.060.40   Pressure regulators

Classification index

E29-417-5

Print number

1 - 23/08/2013

International kinship

ISO 4126-5:2013

European kinship

EN ISO 4126-5:2013
Sumary
Safety devices for protection against excessive pressure - Part 5 : controlled safety pressure-relief systems (CSPRS)

ISO 4126-5:2013 specifies the requirements for controlled safety pressure relief systems (CSPRS) irrespective of the fluid for which they are designed.

It is applicable for main valves having a flow diameter of 4 mm and above which are for use at pressures of 0,1 bar gauge and above. No limitation is placed on temperature.

ISO 4126-5:2013 is a product standard and is not applicable to applications.

Replaced standards (1)
NF EN ISO 4126-5
September 2004
Standard Cancelled
Safety devices for protection against excessive pressure - Part 5 : controlled safety pressure relief systems (CSPRS)

ISO 4126-5:2004 specifies the requirements for controlled safety pressure relief systems, irrespective of the fluid for which they are designed. It is applicable to main valves having a flow diameter of 6 mm and above for use at pressures of 0,1 bar (= 0,01 MPa) gauge and above. No limitation is placed on temperature.This is a product standard and is not concerned with applications.

Table of contents
  • Avant-propos
    iv
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Termes et définitions
    1
  • 4 Symboles et unités
    7
  • 5 Conception
    7
  • 5.1 Généralités
    7
  • 5.2 Raccordements d'extrémité
    9
  • 5.3 Exigences minimales pour les ressorts
    10
  • 5.4 Matériaux
    10
  • 6 Essais de production
    11
  • 6.1 Objet
    11
  • 6.2 Généralités
    11
  • 6.3 Essai hydrostatique
    11
  • 6.4 Essai pneumatique
    12
  • 6.5 Ajustement de la pression de début d'ouverture ou de la pression de réglage à froid
    12
  • 6.6 Essai d'étanchéité du siège
    13
  • 6.7 Joints sous pression
    13
  • 7 Essais de type
    13
  • 7.1 Généralités
    13
  • 7.2 Essais de détermination des caractéristiques de fonctionnement
    14
  • 7.3 Essais de détermination des caractéristiques de débit
    16
  • 7.4 Détermination du coefficient de débit
    18
  • 7.5 Certification du coefficient de débit
    18
  • 7.6 Certification d'un CSPRS
    18
  • 8 Détermination des performances d'un CSPRS
    18
  • 9 Dimensionnement d'un CSPRS
    18
  • 10 Marquage et plombage
    19
  • 10.1 Marquage
    19
  • 10.2 Plombage d'un CSPRS
    20
  • Bibliographie
    21
What is the Redline format?
The Redline + service - standards comparator allows you to easily and simply identify major changes between the current standard and its last canceled version.

At a glance, you will be able to identify the additions, deletions or modifications to a text, table, figure and formula.
At a glance, you will be able to identify the additions, deletions or modifications to a text, table, figure and formula

The Redlines + service is offered to you on the collection of French standards in force, in French language and in HTML and PDF format.

For an overview of the service, click on View a standard in redline format
Need to identify, monitor and decipher standards?

COBAZ is the simple and effective solution to meet the normative needs related to your activity, in France and abroad.

Available by subscription, CObaz is THE modular solution to compose according to your needs today and tomorrow. Quickly discover CObaz!

Request your free, no-obligation live demo

I discover COBAZ