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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

Draft standard

PR NF E35-408/A1 ; PR NF EN ISO 21922/A1
Refrigerating systems and heat pumps - Valves - Requirements, testing and marking - Amendment 1

Title (German)

Kälteanlagen und Wärmepumpen - Ventile - Anforderungen, Prüfung und Kennzeichnung - Änderung 1

Original language English , 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

PR NF E35-408/A1 ; PR NF EN ISO 21922/A1 Refrigerating systems and heat pumps - Valves - Requirements, testing and marking - Amendment 1

Want to learn more?

PR NF E35-408/A1 ; PR NF EN ISO 21922/A1
Refrigerating systems and heat pumps - Valves - Requirements, testing and marking - Amendment 1