NF EN 13077

Devices to prevent pollution by backflow of potable water - Air gap with non-circular overflow (unrestricted) - Family A - Type B

Le présent document spécifie les caractéristiques et les exigences relatives aux surverses avec trop-plein non circulaire (totale) de la Famille A, Type B, pour des débits nominaux n'excédant pas 3 m/s. Les surverses sont des dispositifs destinés à protéger contre la pollution l'eau potable des installations d'eau. Le présent document s'applique à la fois aux surverses faisant partie de produits assemblés en usine et aux surverses réalisées sur site. Il définit les caractéristiques physico-chimiques des matériaux de construction utilisés en vue de l'usage et de l'application prévus, afin d'assurer la conformité au présent document dans des conditions de service normal.

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