ISO 28921-2:2015
Current
The latest, up-to-date edition.
Industrial valves Isolating valves for low-temperature applications Part 2: Type testing
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English, French
05-11-2015
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ISO 28921-2:2015 specifies requirements for the type testing of isolating valves for low-temperature applications to verify the performance of valves at a low temperature from ? 50 C down to ? 196 C.
NOTE Nominal sizes (DN), nominal pipe sizes (NPS), nominal pressure (PN) and Classes are covered in ISO 289211.
ISO 28921-2:2015 does not evaluate valve actuators unless they are integral part of the valve. Valves during testing can be operated manually or an actuator can be used during the testing. The effect of cold gas vapours during testing is taken into consideration in particular if the actuator is mounted directly over the test stand with the cold gases engulfing the actuator.
ISO 28921-2:2015 does not apply to valves for cryogenic services, designed in accordance with ISO 21011, used with cryogenic vessels.
| DevelopmentNote |
Supersedes ISO/DIS 28921-2. (11/2015)
|
| DocumentType |
Standard
|
| Pages |
18
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Standards | Relationship |
| DIN EN ISO 28921-2:2017-05 | Identical |
| NF ISO 28921-2 : 2016 | Identical |
| NF EN ISO 28921-2 : 2017 | Identical |
| NEN EN ISO 28921-2 : 2017 | Identical |
| NS EN ISO 28921-2 : 2017 | Identical |
| I.S. EN ISO 28921-2:2017 | Identical |
| PN EN ISO 28921-2 : 2017 | Identical |
| SN EN ISO 28921-2 : 2017 | Identical |
| UNI EN ISO 28921-2 : 2017 | Identical |
| BS EN ISO 28921-2:2017 | Identical |
| EN ISO 28921-2:2017 | Identical |
| UNE-EN ISO 28921-2:2018 | Identical |
| NEN ISO 28921-2 : 2015 | Identical |
| EN 13480-2:2017 | Metallic industrial piping - Part 2: Materials |
| ISO 17292:2015 | Metal ball valves for petroleum, petrochemical and allied industries |
| ISO 21011:2008 | Cryogenic vessels — Valves for cryogenic service |
| ISO 15761:2002 | Steel gate, globe and check valves for sizes DN 100 and smaller, for the petroleum and natural gas industries |
| ISO 14313:2007 | Petroleum and natural gas industries — Pipeline transportation systems — Pipeline valves |
| ASME B31.3:2016 | PROCESS PIPING |
| ISO 6002:1992 | Bolted bonnet steel gate valves |
| ISO 6708:1995 | Pipework components Definition and selection of DN (nominal size) |
| ISO 10434:2004 | Bolted bonnet steel gate valves for the petroleum, petrochemical and allied industries |
| ISO 12149:1999 | Bolted bonnet steel globe valves for general-purpose applications |
| ISO 7121:2016 | Steel ball valves for general-purpose industrial applications |
| ASME B16.34 : 2017 | VALVES - FLANGED, THREADED, AND WELDING END |
| ISO 10497:2010 | Testing of valves — Fire type-testing requirements |
| ISO 10631:2013 | Metallic butterfly valves for general purposes |
| ISO 28921-1:2013 | Industrial valves Isolating valves for low-temperature applications Part 1: Design, manufacturing and production testing |
| ISO 23208:2017 | Cryogenic vessels — Cleanliness for cryogenic service |
| ISO 5208:2015 | Industrial valves Pressure testing of metallic valves |
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