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— 15 стр.
Protection against pollution of potable water installations and general requirements of devices to prevent pollution by backflow - Technical rule of the DVGW; German version EN 1717:2000— 48 стр.
Specifications for installations inside buildings conveying water for human consumption - Part 5: Operation and maintenance; German version EN 806-5:2012— 32 стр.
