DIN EN ISO 28921-2:2017 Edition

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Industrial valves – Isolating valves for low-temperature applications – Part 2: Type testing

Published By	Publication Date	Number of Pages
DIN	2017-05	26

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Categories: 23.060.01 - Valves in general, DIN

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This part of ISO 28921 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 28921-1. This part of ISO 28921 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 ISO 28921 does not apply to valves for cryogenic services, designed in accordance with ISO 21011, used with cryogenic vessels.

Published Code	DIN
Published By	Deutsches Institut für Normung
Publication Date	2017-05
Pages Count	26
Language	Germany
Descriptors	Ball valves, Butterfly valves, Check valves, Connection valves, Definitions, Design, Dimensions, Fitness for purpose, Gas valves, Gate valves, Globe valves, Industrial fittings, Liquefied natural gas, Low temperatures, Manufacturing, Marking, Natural gas, Packages, Piping system, Qualification tests, Separating device, Shut-off valves, Specification (approval), Stop valves, Testing, Valves
File Size	1.9 MB
ICS Codes	23.060.01 - Valves in general


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DIN EN ISO 28921-2:2017 Edition

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