DS/EN 12729-2003

Devices to prevent pollution by backflow of potable water - Controllable backflow preventer with reduced pressure zone - Family B - Type A

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標準號

DS/EN 12729-2003

發布日期

2003年04月08日

實施日期

2003年02月05日

廢止日期

無

國際標準分類號

91.140.60

發布單位

DK-DS

適用范圍

This European Standard specifies the field of application, the dimensional, the physico-chemical, the design, the hydraulic, the mechanical and the acoustic characteristics of controllable backflow preventer with reduced pressure zone Family B Type A. This standard covers controllable backflow preventers of Family B Type A, with reduced pressure zones, intended to prevent backflow by backsiphoning or backpressure of water into the potable water distribution system whenever the pressure of the latter is lower than the system located downstream. It is applicable to controllable backflow preventers in denominations DN 8 up to DN 250. It covers controllable bac