SS-EN-ISO-28921-2 Industrial valves - Isolating valves for low-temperature applications - Part 2: Type testing (ISO 28921-2:2015)

SS-EN-ISO-28921-2 - 2017 EDITION - CURRENT


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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.

To find similar documents by classification:

23.060.01 (Valves in general)

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Designation Name

SS-EN ISO 28921-2:2017

Revision Level

2017 EDITION

Status

Current

Publication Date

Feb. 24, 2017

Language(s)

English

Page Count

32

International Equivalent

EN ISO 28921-2:2017(IDT); ISO 28921-2:2015(IDT)