NF EN ISO 4126-1
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.
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.
<p>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.</p>
- Avant-proposiv
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1 Domaine d'application1
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2 Références normatives1
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3 Termes et définitions1
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4 Symboles et unités4
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5 Conception4
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5.1 Généralités4
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5.2 Raccordements d'extrémité5
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5.3 Exigences minimales pour les ressorts6
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5.4 Matériaux6
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6 Essai de production6
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6.1 Objet6
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6.2 Généralités6
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6.3 Essai hydrostatique7
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6.4 Essai pneumatique8
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6.5 Ajustement de la pression de réglage ou de début d'ouverture8
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6.6 Essai d'étanchéité du siège8
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7 Essai de type9
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7.1 Généralités9
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7.2 Essais de détermination des caractéristiques de fonctionnement10
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7.3 Essais de détermination des caractéristiques de débit11
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7.4 Détermination du coefficient de débit13
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7.5 Certification du coefficient de débit14
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8 Détermination des performances d'une soupape de sûreté14
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9 Dimensionnement des soupapes de sûreté14
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10 Marquage et plombage14
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10.1 Marquage14
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10.2 Plombage d'une soupape de sûreté15
- Bibliographie16
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