Devices to prevent pollution by backflow of potable water - Air gap with non-circular overflow (unrestricted) - Family A, Type B; English version of DIN EN 13077:2008-09
This European Standard specifies the characteristics and the requirements of air gap with non-circular
overflow (unrestricted) Family A, Type B for nominal flow velocity not exceeding 3 m/s. Air gaps are devices
for protection of potable water in water installations from pollution. This European Standard applies to air gaps
in factory-assembled products and to constructed air gaps in situ, and defines the physico-chemical
characteristics of materials of construction used for the purpose and application to ensure compliance with this
European Standard during normal working use.