International Standard
ISO 28921-2:2015
Industrial valves — Isolating valves for low-temperature applications — Part 2: Type testing
Reference number
ISO 28921-2:2015
Edición 1
2015-11
International Standard
Vista previa
ISO 28921-2:2015
59735
No disponible en español
Publicado (Edición 1, 2015)
Esta norma se revisó y confirmó por última vez en 2020. Por lo tanto, esta versión es la actual.

ISO 28921-2:2015

ISO 28921-2:2015
59735
Idioma
Formato
CHF 96
Convertir Franco suizo (CHF) a tu moneda

Resumen

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 28921‑1.

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.

Informaciones generales

  •  : Publicado
     : 2015-11
    : Norma Internacional confirmada [90.93]
  •  : 1
     : 18
  • ISO/TC 153
    23.060.01 
  • RSS actualizaciones

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