NS EN 13077 : 2018现行
DEVICES TO PREVENT POLLUTION BY BACKFLOW OF POTABLE WATER - AIR GAP WITH NON-CIRCULAR OVERFLOW (UNRESTRICTED) - FAMILY A - TYPE B
出版：Norwegian Standards (Norges Standardiseringsforbund)
专家解读视频
Defines 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.
EN 13077 : 2018 - Identical
DIN EN 13077 : 2008 - Identical
BS EN 13077 : 2008 - Identical
SN EN 13077 : 2008 - Identical
I.S. EN 13077:2008 - Identical
NBN EN 13077 : 2008 - Identical
UNI EN 13077 : 2008 - Identical
EN 13077 : 2018 - Identical
UNE EN 13077 : 2009 - Identical
