NF EN 558

Industrial valves - Face-to-face and centre-to-face dimensions of metal valves for use in flanged pipe systems - PN and Class designated valves

Le présent document spécifie les dimensions face-à-face et face-à-axe des appareils de robinetterie métalliques désignés PN et Class utilisés dans les réseaux de tuyauteries à brides. Il donne également les tolérances sur les dimensions face-à-face et face-à-axe. Il couvre les appareils de robinetterie de PN 2,5 à PN 400, de Class 125 à Class 2 500, et de DN 10 à DN 2 000.

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