ISO 21922:2021/Amd 1:2024
Refrigerating systems and heat pumps — Valves — Requirements, testing and marking — Amendment 1
Refrigerating systems and heat pumps — Valves — Requirements, testing and marking — Amendment 1
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 6
- Дата публикации:
- 13 ноября 2024 г.
- Издание:
- ISO IS 21922 edition 1 version 1
- ICS:
- 27.080
Abstract
Overview
ISO 21922:2021/Amd 1:2024 is the latest amendment to the international standard governing valves used in refrigerating systems and heat pumps. Published by the International Organization for Standardization (ISO), this amendment updates requirements for valve design, testing, and marking to enhance safety, reliability, and environmental performance. It focuses particularly on seat tightness-a critical factor in preventing refrigerant leakage-and provides new methodology for leak testing and classification of valves.
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