BS EN ISO 28921-2:2017
Current
The latest, up-to-date edition.
Industrial valves. Isolating valves for low-temperature applications Type testing
Hardcopy , PDF
English
31-03-2017
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Test conditions
5 Low temperature testing requirements
6 Information to be supplied by the purchaser
Annex A (normative) - Test procedure for type testing
of valves at low temperature
Annex B (informative) - Information to be supplied
by the purchaser
Annex C (informative) - Low-temperature type test record
Bibliography
Defines requirements for the type testing of isolating valves for low-temperature applications to verify the performance of valves at a low temperature from -50 degrees C down to -196 degrees C.
Committee |
PSE/18/1
|
DevelopmentNote |
Supersedes 14/30293296 DC. Together with BS EN ISO 28921-1, it supersedes BS EN 12567. Renumbers and supersedes BS ISO 28921-2. 2017 Version incorporates corrigendum to BS ISO 28921-2. (03/2017)
|
DocumentType |
Standard
|
Pages |
28
|
PublisherName |
British Standards Institution
|
Status |
Current
|
Supersedes |
This part of ISO28921 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. WARNING— Nominal sizes (DN), nominal pipe sizes (NPS), nominal pressure (PN) and Classes are covered in ISO28921‑1 . This part of ISO28921 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. This part of ISO28921 does not apply to valves for cryogenic services, designed in accordance with ISO21011 , used with cryogenic vessels.
Standards | Relationship |
ISO 28921-2:2015 | Identical |
EN ISO 28921-2:2017 | 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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