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EN ISO 21922:2021 Standard

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  Keywords:

#document #pressure #valves #devices #requirements

  Directive

Pressure equipment Directive (2014/68/EU)

  Last Official Journal reference

Monday 12th of January 2026

  Description:

Refrigerating systems and heat pumps - Valves - Requirements, testing and marking (ISO 21922:2021)

  Purpose

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].

  Publication

Monday 3rd of October 2022

  Related Standards

EN 14197-1:2003

Pressure equipment Directive (2014/68/EU)

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EN 764-7:2002/AC:2006

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Pressure equipment - Part 7: Safety systems for unfired pressure equipment

EN 764-7:2002

Pressure equipment Directive (2014/68/EU)

Pressure equipment - Part 7: Safety systems for unfired pressure equipment

EN 764-5:2014

Pressure equipment Directive (2014/68/EU)

Pressure equipment - Part 5: Inspection documentation of metallic materials and compliance with the material specification

EN 764-4:2014

Pressure equipment Directive (2014/68/EU)

Pressure equipment - Part 4: Establishment of technical delivery conditions for metallic materials

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