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Hydrogen Technologies Standards form the basic framework for market ramp-up
More information
Climate change Standards and specifications support climate targets
More information
Smart Farming Standards and specifications are drivers for the digitalization of agriculture
More information

Standards [CURRENT]

SN EN ISO 21922
Refrigerating systems and heat pumps - Valves - Requirements, testing and marking (ISO 21922:2021)

Title (German)

Kälteanlagen und Wärmepumpen - Ventile - Anforderungen, Prüfung und Kennzeichnung (ISO 21922:2021)

Edition 2021-11

Original language French

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Hydrogen Technologies Standards form the basic framework for market ramp-up

Climate change Standards and specifications support climate targets

Smart Farming Standards and specifications are drivers for the digitalization of agriculture

SN EN ISO 21922 Refrigerating systems and heat pumps - Valves - Requirements, testing and marking (ISO 21922:2021)

Want to learn more?

SN EN ISO 21922
Refrigerating systems and heat pumps - Valves - Requirements, testing and marking (ISO 21922:2021)