ISO 21922:2021

International Standard   Current Edition · Approved on 31 August 2021

Refrigerating systems and heat pumps — Valves — Requirements, testing and marking

ISO 21922:2021 Files

English 90 Pages
Current Edition
100.85 BHD

ISO 21922:2021 Scope

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.

Best Sellers

GSO 150-2:2013
 
Gulf Standard
Expiration dates for food products - Part 2 : Voluntary expiration dates
BH GSO 150-2:2015
GSO 150-2:2013 
Bahraini Standard
Expiration dates for food products - Part 2 : Voluntary expiration dates
BH GSO 2055-1:2016
GSO 2055-1:2015 
Bahraini Technical Regulation
HALAL FOOD - Part 1 : General Requirements
GSO 2055-1:2015
 
Gulf Technical Regulation
HALAL FOOD - Part 1 : General Requirements

Recently Published

ISO/IEC 22460-1:2025
 
International Standard
Cards and security devices for personal identification — ISO UAS licence and drone or UAS security module — Part 1: Physical characteristics and basic data sets for UAS licence
ISO 5068-1:2025
 
International Standard
Brown coals and lignites — Determination of moisture — Part 1: Indirect gravimetric method for total moisture
ISO 17581:2025
 
International Standard
Rubber- or plastics-coated fabrics — Determination of water absorption resistance
ISO 22504:2025
 
International Standard
Oil and gas industries including lower carbon energy — Pipeline transportation systems — Onshore and offshore pipelines pig traps design requirements