NF EN 14622

Devices to prevent pollution by backflow of potable water - Air gap with circular overflow (restricted) - Family A, Type F

Le présent document spécifie les caractéristiques et les exigences relatives aux surverses avec trop-plein circulaire (limité) de famille A, type F pour des vitesses d'écoulement nominales ne dépassant pas 3 m/s. Les surverses sont des dispositifs de protection contre la pollution de l'eau potable dans les installations d'eau. Ce document s'applique aux surverses montées en usine et aux surverses construites in situ. Il définit également les caractéristiques physico-chimiques des matériaux de construction afin d'assurer leur conformité avec le présent document dans les conditions normales de travail.

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