Refrigerating systems and heat pumps - Valves - Requirements, testing and marking (ISO 21922:2021 + Amd 1:2024); German version EN ISO 21922:2021 + A1:2024

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Published date

01-09-2025

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DocumentType	Standard
Pages	108
PublisherName	German Institute for Standardisation (Deutsches Institut für Normung)
Status	Current
Supersedes	DIN EN 12178:2017-03 DIN EN ISO 21922/A1:2023-10 (Draft) DIN EN ISO 21922:2023-09

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DIN EN ISO 21922:2025-09