Central drinking water supply; Basic principles relating to the requirements on drinking water Planing, construction and operation of the installations
Devices to prevent pollution by backlow of potable water - Pipe interrupter with permanent atmospheric vent DN 10 to DN 20 - Family D, type C.
实施日期:2009-05-01
Devices to prevent pollution by backflow of potable water - Automatic diverter - Family H, type C
实施日期:2005-08-01
实施日期:2003-09-01
实施日期:2008-02-01
实施日期:2007-09-01
Devices to prevent pollution by backflow of potable water - Unrestricted air gap - Family A, type A,
Devices to prevent pollution by backlow of potable water - Hose union backflow preventer DN 15 to DN 32 - Family H, type A.
Devices to prevent pollution by backflow of potable water. Air gap with injector. Family A. Type D
实施日期:2009-03-31
Devices to prevent pollution by backflow of potable water. Air gap with submerged feed incorporating air inlet plus overflow. Family A, type C
Devices to prevent pollution by backflow of potable water - Air gap with non-circular overflow (unrestricted) - Family A - Type B.
Devices to prevent pollution by backflow of potable water - Hose union backflow preventer DN 15 to DN 32 - Family H; type A
实施日期:2005-08-01
实施日期:2006-01-26
Devices to prevent pollution by backflow of potable water - Air gap with submerged feed incorporating air inlet plus overflow - Family A, type C.
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