EN ISO 21922:2021/prA1
(Amendment)Refrigerating systems and heat pumps - Valves - Requirements, testing and marking - Amendment 1 (ISO 21922:2021/DAM 1:2023)
Refrigerating systems and heat pumps - Valves - Requirements, testing and marking - Amendment 1 (ISO 21922:2021/DAM 1:2023)
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.
Kälteanlagen und Wärmepumpen - Ventile - Anforderungen, Prüfung und Kennzeichnung - Änderung 1 (ISO 21922:2021/DAM 1:2023)
Dieses Dokument legt die Sicherheitsanforderungen, bestimmte funktionale Anforderungen und die Kennzeichnung von Ventilen und anderen Bauteilen, im Folgenden kurz Ventile genannt, für die Verwendung in Kälteanlagen einschließlich Wärmepumpen fest.
Dieses Dokument enthält Anforderungen für Ventile mit Verlängerungsrohren.
Dieses Dokument beschreibt das Verfahren, das bei der Konstruktion von druckbeanspruchten Ventilen zugrunde zu legen ist, sowie die bei der Auswahl von Werkstoffen für Ventilteile zu berücksichtigenden Kriterien.
Dieses Dokument beschreibt Methoden, nach denen reduzierte Werte für die Kerbschlagarbeit bei niedriger Temperatur auf sichere Art und Weise berücksichtigt werden können.
Dieses Dokument gilt für die Konstruktion von Gehäusen und Oberteilen für Druckentlastungseinrichtungen, einschließlich Berstscheibeneinrichtungen, im Hinblick auf die Druckfestigkeit, sie gilt jedoch nicht für andere Aspekte der Konstruktion oder die Anwendung von Druckentlastungseinrichtungen.
Ferner gilt dieses Dokument für Ventile mit einer maximalen Betriebstemperatur von nicht mehr als 200 °C und einem maximal zulässigen Druck von nicht mehr als 160 bar.
Systèmes de réfrigération et pompes à chaleur - Robinetterie - Exigences, essais et marquage - Amendement 1 (ISO 21922:2021/DAM 1:2023)
Le présent document spécifie les exigences de sécurité, certaines exigences fonctionnelles et le marquage des robinets et autres composants possèdant un corps similaire, ci-après appelés robinets, pour une utilisation dans les systèmes de réfrigération, y compris les pompes à chaleur.
Le présent document comprend des exigences pour les robinets avec des tuyaux d’extension.
Le présent document décrit la procédure à suivre lors de la conception des éléments de robinetterie soumis à une pression ainsi que les critères à utiliser dans le choix des matériaux.
Le présent document décrit des méthodes permettant de prendre en compte en toute sécurité les valeurs de résilience faibles à basse température.
Le présent document s'applique à la conception des corps et des chapeaux des dispositifs limiteurs de pression, y compris les dispositifs à disque de rupture, eu égard au confinement de la pression, mais elle ne s'applique à aucun autre aspect de la conception ou de l'application des dispositifs limiteurs de pression.
En outre, le présent document est applicable aux robinets dont la température maximale de fonctionnement ne dépasse pas 200 °C et dont la pression maximale admissible ne dépasse pas 160 bar[1].
[1] 1 bar = 0,1 MPa.
Hladilni sistemi in toplotne črpalke - Ventili - Zahteve, preskušanje in označevanje - Dopolnilo A1 (ISO 21922:2021/DAM 1:2023)
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Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 21922:2022/oprA1:2023
01-april-2023
Hladilni sistemi in toplotne črpalke - Ventili - Zahteve, preskušanje in označevanje
- Dopolnilo A1 (ISO 21922:2021/DAM 1:2023)
Refrigerating systems and heat pumps - Valves - Requirements, testing and marking -
Amendment 1 (ISO 21922:2021/DAM 1:2023)
Kälteanlagen und Wärmepumpen - Ventile - Anforderungen, Prüfung und
Kennzeichnung - Änderung 1 (ISO 21922:2021/DAM 1:2023)
Systèmes de réfrigération et pompes à chaleur - Robinetterie - Exigences, essais et
marquage - Amendement 1 (ISO 21922:2021/DAM 1:2023)
Ta slovenski standard je istoveten z: EN ISO 21922:2021/prA1
ICS:
23.060.20 Zapirni ventili (kroglasti in Ball and plug valves
pipe)
27.080 Toplotne črpalke Heat pumps
27.200 Hladilna tehnologija Refrigerating technology
SIST EN ISO 21922:2022/oprA1:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 21922:2022/oprA1:2023
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SIST EN ISO 21922:2022/oprA1:2023
DRAFT AMENDMENT
ISO 21922:2021/DAM 1
ISO/TC 86/SC 1 Secretariat: ANSI
Voting begins on: Voting terminates on:
2023-02-20 2023-05-15
Refrigerating systems and heat pumps — Valves —
Requirements, testing and marking
AMENDMENT 1
Systèmes de réfrigération et pompes à chaleur — Robinetterie — Exigences, essais et marquage
AMENDEMENT 1
ICS: 27.200; 27.080
This document is circulated as received from the committee secretariat.
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NATIONAL REGULATIONS.
ISO 21922:2021/DAM 1:2023(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
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SIST EN ISO 21922:2022/oprA1:2023
ISO 21922:2021/DAM 1:2023(E)
DRAFT AMENDMENT
ISO 21922:2021/DAM 1
ISO/TC 86/SC 1 Secretariat: ANSI
Voting begins on: Voting terminates on:
Refrigerating systems and heat pumps — Valves —
Requirements, testing and marking
AMENDMENT 1
Systèmes de réfrigération et pompes à chaleur — Robinetterie — Exigences, essais et marquage
AMENDEMENT 1
ICS: 27.200; 27.080
This document is circulated as received from the committee secretariat.
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© ISO 2023
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NATIONAL REGULATIONS.
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SIST EN ISO 21922:2022/oprA1:2023
ISO 21922:2021/DAM 1:2022(E)
Refrigerating systems and heat pumps — Valves —
Requirements, testing and marking
AMENDMENT 1
In Table 1 replace variable description of K , L, and Q with:
VS M
Table 1 — List of symbols
3
K Flow coefficient of the valve m /h
VS
L Leakage percentage %
Q Valve leakage mass flow rate measured with air kg/h
M
In Table 1 replace Q with Q and insert a new variable description of Q :
V V1 V2
Table 2 — List of symbols
3
Q Valve leakage volume flow rate measured upstream with air m /h
V1
3
Q Valve leakage volume flow rate measured downstream with air m /h
V2
Replace 7.6 and Table 3 with:
7.6 Sea
...
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