Draft ISO/DIS 28921-1

“Industrial valves - Isolating valves for low temperatures application Part 1: Design, manufacturing and production testing”

The result of the DIS enquiry on ISO/DIS 28921-1 “Industrial valves - Isolating valves for low temperatures application - Part 1: Design, manufacturing and production testing” was approval by the majority of P members with comments. These comments will now be reviewed and considered by ISO/TC 153/SC 1/WG 13 for inclusion in the standard prior to a further issue for formal vote.

The purpose of this International Standard is the establishment of basic requirements and practices for design, fabrication, material selection and production testing of valves used in low temperature services.

It applies to gate, globe, check, butterfly and ball valves and may be used for other valve types used in low temperature services from –50°C down to –196°C.

It covers valves with body, bonnet, bonnet extension or cover made of metallic materials having nominal sizes DN: 10 to 900 and corresponding nominal pipe sizes NPS: 3/8 to 36.

ISO/NP 28921-2 “Industrial valves - Isolating valves for low temperatures application – Part 2: Type testing”

This draft standard has been prepared by the ISO/ TC 153 SC1 WG13 Project Leader (Korea). The draft standard has been circulated at this stage to ISO/TC 153/SC 1 for information.

ISO/TC153/SC/1/WG13 were to discuss the content during its meeting in Paris in September 2012 and either organise a specific WG13 meeting to discuss the draft ISO/CD 28921-2 before submitting it to CD enquiry, or request SC1 secretary to launch CD enquiry after SC 1 plenary meeting.

Published in Valve User Magazine Issue 23


Summer 2020 // Issue 53
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