Manually operated ball valves and closed bottom taper plug valves for gas installations for buildings
NORM herausgegeben am 1.9.2011
Designation standards: ÖNORM EN 331
Note: UNGÜLTIG
Publication date standards: 1.9.2011
The number of pages: 42
Approximate weight : 126 g (0.28 lbs)
Country: Austrian technische Norm
Kategorie: Technische Normen ÖNORM