ISO 21011:2008

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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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
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