
Refrigerating systems and heat pumps — Valves — Requirements, testing and marking
NORMA vydaná dňa 31.8.2021
Designation standards: ISO 21922:2021
Publication date standards: 31.8.2021
The number of pages: 90
Approximate weight : 301 g (0.66 lbs)
Country: International technical standard
Kategória: Technické normy ISO