GSO ISO 28921-2:2021

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

GSO ISO 28921-2:2021 发布历史

GSO ISO 28921-2:2021由GSO 发布于 2021-07-01。

GSO ISO 28921-2:2021在国际标准分类中归属于: 23.060.01 阀门综合。

GSO ISO 28921-2:2021 的最新版本是哪一版？

最新版本是 GSO ISO 28921-2:2021 。

GSO ISO 28921-2:2021的历代版本如下：

• 2021年 GSO ISO 28921-2:2021

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.

标准号

GSO ISO 28921-2:2021

发布

2021年

发布单位

GSO

当前最新

GSO ISO 28921-2:2021

 

 

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