Norm

NEN-ISO 28921-2:2015 en

Industriƫle afsluiters - Isolerende afsluiters voor lage temperatuur toepassingen - Deel 2: Typebeproeving

79,70

Over deze norm

Status Definitief
Aantal pagina's 18
Gepubliceerd op 01-11-2015
Taal Engels
NEN-ISO 28921-2 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. 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.

Details

ICS-code 23.060.01
Nederlandse titel Industriƫle afsluiters - Isolerende afsluiters voor lage temperatuur toepassingen - Deel 2: Typebeproeving
Engelse titel Industrial valves - Isolating valves for low-temperature applications - Part 2: Type testing

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