NF EN 1171

Industrial valves - Cast iron gate valves

Le présent document spécifie les prescriptions applicables aux robinets-vannes en fonte à extrémité à brides, à extrémités à emboîter femelle ou mâle, principalement pour des applications industrielles et d'usage général. Il donne des prescriptions sur la conception, la résistance mécanique de l'enveloppe, l'étanchéité du siège, le dimensionnement de l'organe de manoeuvre et le couple de résistance. Il précise les procédures d'essai applicables aux robinets-vannes en fonte, le marquage et la désignation. Le présent document est destiné à venir en appui aux exigences essentielles de la Directive 97/23/CE " DESP ".

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