This document specifies safety requirements, certain functional requirements, and marking of valves and other components with similar bodies, hereinafter called valves, for use in refrigerating systems including heat pumps.
This document includes requirements for valves with extension pipes.
This document describes the procedure to be followed when designing valve parts subjected to pressure as well as the criteria to be used in the selection of materials.
This document describes methods by which reduced impact values at low temperatures may be taken into account in a safe manner.
This document applies to the design of bodies and bonnets for pressure relief devices, including bursting disc devices, with respect to pressure containment but it does not apply to any other aspects of the design or application of pressure relief devices.
In addition, this document is applicable to valves with a maximum operating temperature not exceeding 200 °C and a maximum allowable pressure not exceeding 160 bar.
 1 bar = 0,1 MPa.
Status: PublishedPublication date: 2021-08
Edition: 1Number of pages: 90
Technical Committee: ISO/TC 86/SC 1 Safety and environmental requirements for refrigerating systems
This standard contributes to the following Sustainable Development Goal:
Buy this standard
|std 1 208||PDF + ePub|
|std 2 208||Paper|
ISO 21922:2021Stage: 60.60
Corrigenda / AmendmentsUnder development
ISO 21922:2021/DAmd 1
Got a question?
Check out our FAQs
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)
Keep up to date with ISO
Sign up to our newsletter for the latest news, views and product information.