DIN EN 13078-2004 防饮用水回流污染装置.带浸没式给水装有空气进口和溢流口的气隙.A类C型
Devices to prevent pollution by backflow of potable water - Air gap with submerged feed incorporating air inlet plus overflow - Family A, type C; German version EN 13078:2003
This European standard specifies the characteristics and the requirements of air gaps with submerged feed incorporating air inlet and an overflow, Family A, Type C. Air gaps are devices for protection of potable water in water installations from pollution.