Manually operated ball valves and closed bottom taper plug valves for gas installations for buildings
NORMA vydána dne 5.10.2016
Designation standards: UNE-EN 331:2016
Publication date standards: 5.10.2016
The number of pages: 48
Approximate weight : 144 g (0.32 lbs)
Country: Spanish technical standard
Kategorie: Technické normy UNE