ISO 21011:2008

Cryogenic vessels — Valves for cryogenic service

ISO 21011:2008 specifies the requirements for the design, manufacture and testing of valves for a rated temperature of -40 °C and below (cryogenic service), i.e. for operation with cryogenic fluids in addition to operation at temperatures from ambient to cryogenic. ISO 21011:2008 applies to all types of cryogenic valves, including vacuum jacketed cryogenic valves up to size DN 150. ISO 21011:2008 is not applicable to pressure relief valves covered by ISO 21013-1.

Récipients cryogéniques — Robinets pour usage cryogénique

General Information

• Status: Published
• Publication Date: 23-Jan-2008
• ICS: 23.020.40 - Cryogenic vessels
• Technical Committee: ISO/TC 220 - Cryogenic vessels
• Drafting Committee: ISO/TC 220/WG 3 - Supporting standards
• Current Stage: 9093 - International Standard confirmed
• Completion Date: 27-Oct-2023

Relations

• Revised: ISO/FDIS 21011 - Cryogenic vessels — Valves for cryogenic service
• Effective Date: 10-Jul-2021

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 21011
First edition
2008-02-01

Cryogenic vessels — Valves for
cryogenic service
Récipients cryogéniques — Robinets pour usage cryogénique




Reference number
ISO 21011:2008(E)
©
ISO 2008

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ISO 21011:2008(E)
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©  ISO 2008
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ii © ISO 2008 – All rights reserved

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ISO 21011:2008(E)
Contents Page
Foreword. iv
1 Scope .1
2 Normative references .1
3 Terms and definitions .2
4 Requirements.4
4.1 Materials .4
4.2 Design .5
5 Testing .7
5.1 Type approval.7
5.2 Production tests.8
5.3 Test report .9
6 Cleanliness .9
7 Marking .9
7.1 Marking on the body of the valve.9
7.2 Marking on an identification plate.9
Annex A (informative) Recommended methods for leak tightness testing of cryogenic valves.10
Bibliography .12

© ISO 2008 – All rights reserved iii

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ISO 21011:2008(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be re
...