NF E29-414

NF E29-414

April 1992
Standard Cancelled

Industrial valves. Safety valves. Examples for flowrate calculation of safety valves types S,G1,L1 and L2.

La présente norme donne la série des orifices de soupapes recommandés ainsi que des exemples de calculs du débit des soupapes de sûreté de types S, G1, L1 et L2 au sens de la norme NF E 29-411. Elle donne en outre, en annexe, des compléments pour le calcul du débit théorique des soupapes.

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Main informations

Collections

National standards and national normative documents

Thematics

Sécurité, Gestion des risques et SST, QSE

Publication date

April 1992

Number of pages

43 p.

Reference

NF E29-414

ICS Codes

13.240   Protection against excessive pressure

Classification index

E29-414

Print number

1 - 01/04/1992

International kinship

ISO 4126:1981
Sumary
Industrial valves. Safety valves. Examples for flowrate calculation of safety valves types S,G1,L1 and L2.

La présente norme donne la série des orifices de soupapes recommandés ainsi que des exemples de calculs du débit des soupapes de sûreté de types S, G1, L1 et L2 au sens de la norme NF E 29-411. Elle donne en outre, en annexe, des compléments pour le calcul du débit théorique des soupapes.
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 Domaine d'application
    4
  • 2 Références normatives
    6
  • 3 Orifices recommandés
    6
  • 3.1 Section effective d'écoulement
    6
  • 3.2 Orifices recommandés
    6
  • 4 Exemples de calculs
    8
  • 4.1 Soupape de sûreté type S
    8
  • 4.2 Soupape de sûreté type G1
    10
  • 4.3 Soupape de sûreté de type L1
    14
  • 4.4 Soupape de sûreté de type L2
    18
  • 5 Bibliographie
    18
  • Annexe A (normative) Complément pour le calcul du débit théorique des soupapes de sûreté
    20
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