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ILNAS-EN ISO 21922:2021 Edition 11/2021
Refrigerating systems and heat pumps - Valves - Requirements, testing and marking (ISO 21922:2021)
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Abstract

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].   [1] 1 bar = 0,1 MPa.

Status

Standard - Active

Origin

Technical Committee :
CEN/TC 182 : Refrigerating systems, safety and environmental requirements

Implementation

start of the vote on the project    19/07/2018   date of ratification (dor)    23/05/2021
end of the vote on the project    10/10/2018   date of anouncement (doa)    28/02/2022
start of the vote on the final project    25/02/2021   date of publication (dop)    31/05/2022
end of the vote on the final project    22/04/2021   date of withdrawal (dow)    31/05/2022


Publication Official Journal
of the Grand-Duchy of Luxembourg
24/05/2022
Reference Mémorial A N° 244

Relations

Evolutions
EN ISO 21922:2021/prA1

Relations to older standards
ILNAS-EN 12178:2016
ILNAS-EN 12284:2003

Relations to international standards
ISO 21922 
ISO 21922:2021 

International Classification for Standards (ICS codes) :

27.080 : Heat pumps
27.200 : Refrigerating technology

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